Dokeos PHP Cross Reference Learning Management Systems

Source: /main/inc/lib/ezpdf/class.pdf.php - 3072 lines - 100248 bytes - Summary - Text - Print

   1  <?php
   2  /**
   3  * Cpdf
   4  *
   5  * http://www.ros.co.nz/pdf
   6  *
   7  * A PHP class to provide the basic functionality to create a pdf document without
   8  * any requirement for additional modules.
   9  *
  10  * Note that they companion class CezPdf can be used to extend this class and dramatically
  11  * simplify the creation of documents.
  12  *
  13  * IMPORTANT NOTE
  14  * there is no warranty, implied or otherwise with this software.
  15  *
  16  * LICENCE
  17  * This code has been placed in the Public Domain for all to enjoy.
  18  *
  19  * @author        Wayne Munro <pdf@ros.co.nz>
  20  * @version     009
  21  * @package    Cpdf
  22  */
  23  class Cpdf {
  24  
  25  /**
  26  * the current number of pdf objects in the document
  27  */
  28  var $numObj=0;
  29  /**
  30  * this array contains all of the pdf objects, ready for final assembly
  31  */
  32  var $objects = array();
  33  /**
  34  * the objectId (number within the objects array) of the document catalog
  35  */
  36  var $catalogId;
  37  /**
  38  * array carrying information about the fonts that the system currently knows about
  39  * used to ensure that a font is not loaded twice, among other things
  40  */
  41  var $fonts=array();
  42  /**
  43  * a record of the current font
  44  */
  45  var $currentFont='';
  46  /**
  47  * the current base font
  48  */
  49  var $currentBaseFont='';
  50  /**
  51  * the number of the current font within the font array
  52  */
  53  var $currentFontNum=0;
  54  /**
  55  *
  56  */
  57  var $currentNode;
  58  /**
  59  * object number of the current page
  60  */
  61  var $currentPage;
  62  /**
  63  * object number of the currently active contents block
  64  */
  65  var $currentContents;
  66  /**
  67  * number of fonts within the system
  68  */
  69  var $numFonts=0;
  70  /**
  71  * current colour for fill operations, defaults to inactive value, all three components should be between 0 and 1 inclusive when active
  72  */
  73  var $currentColour=array('r'=>-1,'g'=>-1,'b'=>-1);
  74  /**
  75  * current colour for stroke operations (lines etc.)
  76  */
  77  var $currentStrokeColour=array('r'=>-1,'g'=>-1,'b'=>-1);
  78  /**
  79  * current style that lines are drawn in
  80  */
  81  var $currentLineStyle='';
  82  /**
  83  * an array which is used to save the state of the document, mainly the colours and styles
  84  * it is used to temporarily change to another state, the change back to what it was before
  85  */
  86  var $stateStack = array();
  87  /**
  88  * number of elements within the state stack
  89  */
  90  var $nStateStack = 0;
  91  /**
  92  * number of page objects within the document
  93  */
  94  var $numPages=0;
  95  /**
  96  * object Id storage stack
  97  */
  98  var $stack=array();
  99  /**
 100  * number of elements within the object Id storage stack
 101  */
 102  var $nStack=0;
 103  /**
 104  * an array which contains information about the objects which are not firmly attached to pages
 105  * these have been added with the addObject function
 106  */
 107  var $looseObjects=array();
 108  /**
 109  * array contains infomation about how the loose objects are to be added to the document
 110  */
 111  var $addLooseObjects=array();
 112  /**
 113  * the objectId of the information object for the document
 114  * this contains authorship, title etc.
 115  */
 116  var $infoObject=0;
 117  /**
 118  * number of images being tracked within the document
 119  */
 120  var $numImages=0;
 121  /**
 122  * an array containing options about the document
 123  * it defaults to turning on the compression of the objects
 124  */
 125  var $options=array('compression'=>1);
 126  /**
 127  * the objectId of the first page of the document
 128  */
 129  var $firstPageId;
 130  /**
 131  * used to track the last used value of the inter-word spacing, this is so that it is known
 132  * when the spacing is changed.
 133  */
 134  var $wordSpaceAdjust=0;
 135  /**
 136  * the object Id of the procset object
 137  */
 138  var $procsetObjectId;
 139  /**
 140  * store the information about the relationship between font families
 141  * this used so that the code knows which font is the bold version of another font, etc.
 142  * the value of this array is initialised in the constuctor function.
 143  */
 144  var $fontFamilies = array();
 145  /**
 146  * track if the current font is bolded or italicised
 147  */
 148  var $currentTextState = '';
 149  /**
 150  * messages are stored here during processing, these can be selected afterwards to give some useful debug information
 151  */
 152  var $messages='';
 153  /**
 154  * the ancryption array for the document encryption is stored here
 155  */
 156  var $arc4='';
 157  /**
 158  * the object Id of the encryption information
 159  */
 160  var $arc4_objnum=0;
 161  /**
 162  * the file identifier, used to uniquely identify a pdf document
 163  */
 164  var $fileIdentifier='';
 165  /**
 166  * a flag to say if a document is to be encrypted or not
 167  */
 168  var $encrypted=0;
 169  /**
 170  * the ancryption key for the encryption of all the document content (structure is not encrypted)
 171  */
 172  var $encryptionKey='';
 173  /**
 174  * array which forms a stack to keep track of nested callback functions
 175  */
 176  var $callback = array();
 177  /**
 178  * the number of callback functions in the callback array
 179  */
 180  var $nCallback = 0;
 181  /**
 182  * store label->id pairs for named destinations, these will be used to replace internal links
 183  * done this way so that destinations can be defined after the location that links to them
 184  */
 185  var $destinations = array();
 186  /**
 187  * store the stack for the transaction commands, each item in here is a record of the values of all the
 188  * variables within the class, so that the user can rollback at will (from each 'start' command)
 189  * note that this includes the objects array, so these can be large.
 190  */
 191  var $checkpoint = '';
 192  /**
 193  * class constructor
 194  * this will start a new document
 195  * @var array array of 4 numbers, defining the bottom left and upper right corner of the page. first two are normally zero.
 196  */
 197  function Cpdf ($pageSize=array(0,0,612,792)){
 198    $this->newDocument($pageSize);
 199  
 200    // also initialize the font families that are known about already
 201    $this->setFontFamily('init');
 202  //  $this->fileIdentifier = md5('xxxxxxxx'.time());
 203  
 204  }
 205  
 206  /**
 207  * Document object methods (internal use only)
 208  *
 209  * There is about one object method for each type of object in the pdf document
 210  * Each function has the same call list ($id,$action,$options).
 211  * $id = the object ID of the object, or what it is to be if it is being created
 212  * $action = a string specifying the action to be performed, though ALL must support:
 213  *           'new' - create the object with the id $id
 214  *           'out' - produce the output for the pdf object
 215  * $options = optional, a string or array containing the various parameters for the object
 216  *
 217  * These, in conjunction with the output function are the ONLY way for output to be produced
 218  * within the pdf 'file'.
 219  */
 220  
 221  /**
 222  *destination object, used to specify the location for the user to jump to, presently on opening
 223  */
 224  function o_destination($id,$action,$options=''){
 225    if ($action!='new'){
 226      $o =& $this->objects[$id];
 227    }
 228    switch($action){
 229      case 'new':
 230        $this->objects[$id]=array('t'=>'destination','info'=>array());
 231        $tmp = '';
 232        switch ($options['type']){
 233          case 'XYZ':
 234          case 'FitR':
 235            $tmp =  ' '.$options['p3'].$tmp;
 236          case 'FitH':
 237          case 'FitV':
 238          case 'FitBH':
 239          case 'FitBV':
 240            $tmp =  ' '.$options['p1'].' '.$options['p2'].$tmp;
 241          case 'Fit':
 242          case 'FitB':
 243            $tmp =  $options['type'].$tmp;
 244            $this->objects[$id]['info']['string']=$tmp;
 245            $this->objects[$id]['info']['page']=$options['page'];
 246        }
 247        break;
 248      case 'out':
 249        $tmp = $o['info'];
 250        $res="\n".$id." 0 obj\n".'['.$tmp['page'].' 0 R /'.$tmp['string']."]\nendobj\n";
 251        return $res;
 252        break;
 253    }
 254  }
 255  
 256  /**
 257  * set the viewer preferences
 258  */
 259  function o_viewerPreferences($id,$action,$options=''){
 260    if ($action!='new'){
 261      $o =& $this->objects[$id];
 262    }
 263    switch ($action){
 264      case 'new':
 265        $this->objects[$id]=array('t'=>'viewerPreferences','info'=>array());
 266        break;
 267      case 'add':
 268        foreach($options as $k=>$v){
 269          switch ($k){
 270            case 'HideToolbar':
 271            case 'HideMenubar':
 272            case 'HideWindowUI':
 273            case 'FitWindow':
 274            case 'CenterWindow':
 275            case 'NonFullScreenPageMode':
 276            case 'Direction':
 277              $o['info'][$k]=$v;
 278            break;
 279          }
 280        }
 281        break;
 282      case 'out':
 283  
 284        $res="\n".$id." 0 obj\n".'<< ';
 285        foreach($o['info'] as $k=>$v){
 286          $res.="\n/".$k.' '.$v;
 287        }
 288        $res.="\n>>\n";
 289        return $res;
 290        break;
 291    }
 292  }
 293  
 294  /**
 295  * define the document catalog, the overall controller for the document
 296  */
 297  function o_catalog($id,$action,$options=''){
 298    if ($action!='new'){
 299      $o =& $this->objects[$id];
 300    }
 301    switch ($action){
 302      case 'new':
 303        $this->objects[$id]=array('t'=>'catalog','info'=>array());
 304        $this->catalogId=$id;
 305        break;
 306      case 'outlines':
 307      case 'pages':
 308      case 'openHere':
 309        $o['info'][$action]=$options;
 310        break;
 311      case 'viewerPreferences':
 312        if (!isset($o['info']['viewerPreferences'])){
 313          $this->numObj++;
 314          $this->o_viewerPreferences($this->numObj,'new');
 315          $o['info']['viewerPreferences']=$this->numObj;
 316        }
 317        $vp = $o['info']['viewerPreferences'];
 318        $this->o_viewerPreferences($vp,'add',$options);
 319        break;
 320      case 'out':
 321        $res="\n".$id." 0 obj\n".'<< /Type /Catalog';
 322        foreach($o['info'] as $k=>$v){
 323          switch($k){
 324            case 'outlines':
 325              $res.="\n".'/Outlines '.$v.' 0 R';
 326              break;
 327            case 'pages':
 328              $res.="\n".'/Pages '.$v.' 0 R';
 329              break;
 330            case 'viewerPreferences':
 331              $res.="\n".'/ViewerPreferences '.$o['info']['viewerPreferences'].' 0 R';
 332              break;
 333            case 'openHere':
 334              $res.="\n".'/OpenAction '.$o['info']['openHere'].' 0 R';
 335              break;
 336          }
 337        }
 338        $res.=" >>\nendobj";
 339        return $res;
 340        break;
 341    }
 342  }
 343  
 344  /**
 345  * object which is a parent to the pages in the document
 346  */
 347  function o_pages($id,$action,$options=''){
 348    if ($action!='new'){
 349      $o =& $this->objects[$id];
 350    }
 351    switch ($action){
 352      case 'new':
 353        $this->objects[$id]=array('t'=>'pages','info'=>array());
 354        $this->o_catalog($this->catalogId,'pages',$id);
 355        break;
 356      case 'page':
 357        if (!is_array($options)){
 358          // then it will just be the id of the new page
 359          $o['info']['pages'][]=$options;
 360        } else {
 361          // then it should be an array having 'id','rid','pos', where rid=the page to which this one will be placed relative
 362          // and pos is either 'before' or 'after', saying where this page will fit.
 363          if (isset($options['id']) && isset($options['rid']) && isset($options['pos'])){
 364            $i = array_search($options['rid'],$o['info']['pages']);
 365            if (isset($o['info']['pages'][$i]) && $o['info']['pages'][$i]==$options['rid']){
 366              // then there is a match
 367              // make a space
 368              switch ($options['pos']){
 369                case 'before':
 370                  $k = $i;
 371                  break;
 372                case 'after':
 373                  $k=$i+1;
 374                  break;
 375                default:
 376                  $k=-1;
 377                  break;
 378              }
 379              if ($k>=0){
 380                for ($j=count($o['info']['pages'])-1;$j>=$k;$j--){
 381                  $o['info']['pages'][$j+1]=$o['info']['pages'][$j];
 382                }
 383                $o['info']['pages'][$k]=$options['id'];
 384              }
 385            }
 386          }
 387        }
 388        break;
 389      case 'procset':
 390        $o['info']['procset']=$options;
 391        break;
 392      case 'mediaBox':
 393        $o['info']['mediaBox']=$options; // which should be an array of 4 numbers
 394        break;
 395      case 'font':
 396        $o['info']['fonts'][]=array('objNum'=>$options['objNum'],'fontNum'=>$options['fontNum']);
 397        break;
 398      case 'xObject':
 399        $o['info']['xObjects'][]=array('objNum'=>$options['objNum'],'label'=>$options['label']);
 400        break;
 401      case 'out':
 402        if (count($o['info']['pages'])){
 403          $res="\n".$id." 0 obj\n<< /Type /Pages\n/Kids [";
 404          foreach($o['info']['pages'] as $k=>$v){
 405            $res.=$v." 0 R\n";
 406          }
 407          $res.="]\n/Count ".count($this->objects[$id]['info']['pages']);
 408          if ((isset($o['info']['fonts']) && count($o['info']['fonts'])) || isset($o['info']['procset'])){
 409            $res.="\n/Resources <<";
 410            if (isset($o['info']['procset'])){
 411              $res.="\n/ProcSet ".$o['info']['procset']." 0 R";
 412            }
 413            if (isset($o['info']['fonts']) && count($o['info']['fonts'])){
 414              $res.="\n/Font << ";
 415              foreach($o['info']['fonts'] as $finfo){
 416                $res.="\n/F".$finfo['fontNum']." ".$finfo['objNum']." 0 R";
 417              }
 418              $res.=" >>";
 419            }
 420            if (isset($o['info']['xObjects']) && count($o['info']['xObjects'])){
 421              $res.="\n/XObject << ";
 422              foreach($o['info']['xObjects'] as $finfo){
 423                $res.="\n/".$finfo['label']." ".$finfo['objNum']." 0 R";
 424              }
 425              $res.=" >>";
 426            }
 427            $res.="\n>>";
 428            if (isset($o['info']['mediaBox'])){
 429              $tmp=$o['info']['mediaBox'];
 430              $res.="\n/MediaBox [".sprintf('%.3f',$tmp[0]).' '.sprintf('%.3f',$tmp[1]).' '.sprintf('%.3f',$tmp[2]).' '.sprintf('%.3f',$tmp[3]).']';
 431            }
 432          }
 433          $res.="\n >>\nendobj";
 434        } else {
 435          $res="\n".$id." 0 obj\n<< /Type /Pages\n/Count 0\n>>\nendobj";
 436        }
 437        return $res;
 438      break;
 439    }
 440  }
 441  
 442  /**
 443  * define the outlines in the doc, empty for now
 444  */
 445  function o_outlines($id,$action,$options=''){
 446    if ($action!='new'){
 447      $o =& $this->objects[$id];
 448    }
 449    switch ($action){
 450      case 'new':
 451        $this->objects[$id]=array('t'=>'outlines','info'=>array('outlines'=>array()));
 452        $this->o_catalog($this->catalogId,'outlines',$id);
 453        break;
 454      case 'outline':
 455        $o['info']['outlines'][]=$options;
 456        break;
 457      case 'out':
 458        if (count($o['info']['outlines'])){
 459          $res="\n".$id." 0 obj\n<< /Type /Outlines /Kids [";
 460          foreach($o['info']['outlines'] as $k=>$v){
 461            $res.=$v." 0 R ";
 462          }
 463          $res.="] /Count ".count($o['info']['outlines'])." >>\nendobj";
 464        } else {
 465          $res="\n".$id." 0 obj\n<< /Type /Outlines /Count 0 >>\nendobj";
 466        }
 467        return $res;
 468        break;
 469    }
 470  }
 471  
 472  /**
 473  * an object to hold the font description
 474  */
 475  function o_font($id,$action,$options=''){
 476    if ($action!='new'){
 477      $o =& $this->objects[$id];
 478    }
 479    switch ($action){
 480      case 'new':
 481        $this->objects[$id]=array('t'=>'font','info'=>array('name'=>$options['name'],'SubType'=>'Type1'));
 482        $fontNum=$this->numFonts;
 483        $this->objects[$id]['info']['fontNum']=$fontNum;
 484        // deal with the encoding and the differences
 485        if (isset($options['differences'])){
 486          // then we'll need an encoding dictionary
 487          $this->numObj++;
 488          $this->o_fontEncoding($this->numObj,'new',$options);
 489          $this->objects[$id]['info']['encodingDictionary']=$this->numObj;
 490        } else if (isset($options['encoding'])){
 491          // we can specify encoding here
 492          switch($options['encoding']){
 493            case 'WinAnsiEncoding':
 494            case 'MacRomanEncoding':
 495            case 'MacExpertEncoding':
 496              $this->objects[$id]['info']['encoding']=$options['encoding'];
 497              break;
 498            case 'none':
 499              break;
 500            default:
 501              $this->objects[$id]['info']['encoding']='WinAnsiEncoding';
 502              break;
 503          }
 504        } else {
 505          $this->objects[$id]['info']['encoding']='WinAnsiEncoding';
 506        }
 507        // also tell the pages node about the new font
 508        $this->o_pages($this->currentNode,'font',array('fontNum'=>$fontNum,'objNum'=>$id));
 509        break;
 510      case 'add':
 511        foreach ($options as $k=>$v){
 512          switch ($k){
 513            case 'BaseFont':
 514              $o['info']['name'] = $v;
 515              break;
 516            case 'FirstChar':
 517            case 'LastChar':
 518            case 'Widths':
 519            case 'FontDescriptor':
 520            case 'SubType':
 521            $this->addMessage('o_font '.$k." : ".$v);
 522              $o['info'][$k] = $v;
 523              break;
 524          }
 525       }
 526        break;
 527      case 'out':
 528        $res="\n".$id." 0 obj\n<< /Type /Font\n/Subtype /".$o['info']['SubType']."\n";
 529        $res.="/Name /F".$o['info']['fontNum']."\n";
 530        $res.="/BaseFont /".$o['info']['name']."\n";
 531        if (isset($o['info']['encodingDictionary'])){
 532          // then place a reference to the dictionary
 533          $res.="/Encoding ".$o['info']['encodingDictionary']." 0 R\n";
 534        } else if (isset($o['info']['encoding'])){
 535          // use the specified encoding
 536          $res.="/Encoding /".$o['info']['encoding']."\n";
 537        }
 538        if (isset($o['info']['FirstChar'])){
 539          $res.="/FirstChar ".$o['info']['FirstChar']."\n";
 540        }
 541        if (isset($o['info']['LastChar'])){
 542          $res.="/LastChar ".$o['info']['LastChar']."\n";
 543        }
 544        if (isset($o['info']['Widths'])){
 545          $res.="/Widths ".$o['info']['Widths']." 0 R\n";
 546        }
 547        if (isset($o['info']['FontDescriptor'])){
 548          $res.="/FontDescriptor ".$o['info']['FontDescriptor']." 0 R\n";
 549        }
 550        $res.=">>\nendobj";
 551        return $res;
 552        break;
 553    }
 554  }
 555  
 556  /**
 557  * a font descriptor, needed for including additional fonts
 558  */
 559  function o_fontDescriptor($id,$action,$options=''){
 560    if ($action!='new'){
 561      $o =& $this->objects[$id];
 562    }
 563    switch ($action){
 564      case 'new':
 565        $this->objects[$id]=array('t'=>'fontDescriptor','info'=>$options);
 566        break;
 567      case 'out':
 568        $res="\n".$id." 0 obj\n<< /Type /FontDescriptor\n";
 569        foreach ($o['info'] as $label => $value){
 570          switch ($label){
 571            case 'Ascent':
 572            case 'CapHeight':
 573            case 'Descent':
 574            case 'Flags':
 575            case 'ItalicAngle':
 576            case 'StemV':
 577            case 'AvgWidth':
 578            case 'Leading':
 579            case 'MaxWidth':
 580            case 'MissingWidth':
 581            case 'StemH':
 582            case 'XHeight':
 583            case 'CharSet':
 584              if (strlen($value)){
 585                $res.='/'.$label.' '.$value."\n";
 586              }
 587              break;
 588            case 'FontFile':
 589            case 'FontFile2':
 590            case 'FontFile3':
 591              $res.='/'.$label.' '.$value." 0 R\n";
 592              break;
 593            case 'FontBBox':
 594              $res.='/'.$label.' ['.$value[0].' '.$value[1].' '.$value[2].' '.$value[3]."]\n";
 595              break;
 596            case 'FontName':
 597              $res.='/'.$label.' /'.$value."\n";
 598              break;
 599          }
 600        }
 601        $res.=">>\nendobj";
 602        return $res;
 603        break;
 604    }
 605  }
 606  
 607  /**
 608  * the font encoding
 609  */
 610  function o_fontEncoding($id,$action,$options=''){
 611    if ($action!='new'){
 612      $o =& $this->objects[$id];
 613    }
 614    switch ($action){
 615      case 'new':
 616        // the options array should contain 'differences' and maybe 'encoding'
 617        $this->objects[$id]=array('t'=>'fontEncoding','info'=>$options);
 618        break;
 619      case 'out':
 620        $res="\n".$id." 0 obj\n<< /Type /Encoding\n";
 621        if (!isset($o['info']['encoding'])){
 622          $o['info']['encoding']='WinAnsiEncoding';
 623        }
 624        if ($o['info']['encoding']!='none'){
 625          $res.="/BaseEncoding /".$o['info']['encoding']."\n";
 626        }
 627        $res.="/Differences \n[";
 628        $onum=-100;
 629        foreach($o['info']['differences'] as $num=>$label){
 630          if ($num!=$onum+1){
 631            // we cannot make use of consecutive numbering
 632            $res.= "\n".$num." /".$label;
 633          } else {
 634            $res.= " /".$label;
 635          }
 636          $onum=$num;
 637        }
 638        $res.="\n]\n>>\nendobj";
 639        return $res;
 640        break;
 641    }
 642  }
 643  
 644  /**
 645  * the document procset, solves some problems with printing to old PS printers
 646  */
 647  function o_procset($id,$action,$options=''){
 648    if ($action!='new'){
 649      $o =& $this->objects[$id];
 650    }
 651    switch ($action){
 652      case 'new':
 653        $this->objects[$id]=array('t'=>'procset','info'=>array('PDF'=>1,'Text'=>1));
 654        $this->o_pages($this->currentNode,'procset',$id);
 655        $this->procsetObjectId=$id;
 656        break;
 657      case 'add':
 658        // this is to add new items to the procset list, despite the fact that this is considered
 659        // obselete, the items are required for printing to some postscript printers
 660        switch ($options) {
 661          case 'ImageB':
 662          case 'ImageC':
 663          case 'ImageI':
 664            $o['info'][$options]=1;
 665            break;
 666        }
 667        break;
 668      case 'out':
 669        $res="\n".$id." 0 obj\n[";
 670        foreach ($o['info'] as $label=>$val){
 671          $res.='/'.$label.' ';
 672        }
 673        $res.="]\nendobj";
 674        return $res;
 675        break;
 676    }
 677  }
 678  
 679  /**
 680  * define the document information
 681  */
 682  function o_info($id,$action,$options=''){
 683    if ($action!='new'){
 684      $o =& $this->objects[$id];
 685    }
 686    switch ($action){
 687      case 'new':
 688        $this->infoObject=$id;
 689        $date='D:'.date('Ymd');
 690        $this->objects[$id]=array('t'=>'info','info'=>array('Creator'=>'R and OS php pdf writer, http://www.ros.co.nz','CreationDate'=>$date));
 691        break;
 692      case 'Title':
 693      case 'Author':
 694      case 'Subject':
 695      case 'Keywords':
 696      case 'Creator':
 697      case 'Producer':
 698      case 'CreationDate':
 699      case 'ModDate':
 700      case 'Trapped':
 701        $o['info'][$action]=$options;
 702        break;
 703      case 'out':
 704        if ($this->encrypted){
 705          $this->encryptInit($id);
 706        }
 707        $res="\n".$id." 0 obj\n<<\n";
 708        foreach ($o['info']  as $k=>$v){
 709          $res.='/'.$k.' (';
 710          if ($this->encrypted){
 711            $res.=$this->filterText($this->ARC4($v));
 712          } else {
 713            $res.=$this->filterText($v);
 714          }
 715          $res.=")\n";
 716        }
 717        $res.=">>\nendobj";
 718        return $res;
 719        break;
 720    }
 721  }
 722  
 723  /**
 724  * an action object, used to link to URLS initially
 725  */
 726  function o_action($id,$action,$options=''){
 727    if ($action!='new'){
 728      $o =& $this->objects[$id];
 729    }
 730    switch ($action){
 731      case 'new':
 732        if (is_array($options)){
 733          $this->objects[$id]=array('t'=>'action','info'=>$options,'type'=>$options['type']);
 734        } else {
 735          // then assume a URI action
 736          $this->objects[$id]=array('t'=>'action','info'=>$options,'type'=>'URI');
 737        }
 738        break;
 739      case 'out':
 740        if ($this->encrypted){
 741          $this->encryptInit($id);
 742        }
 743        $res="\n".$id." 0 obj\n<< /Type /Action";
 744        switch($o['type']){
 745          case 'ilink':
 746            // there will be an 'label' setting, this is the name of the destination
 747            $res.="\n/S /GoTo\n/D ".$this->destinations[(string)$o['info']['label']]." 0 R";
 748            break;
 749          case 'URI':
 750            $res.="\n/S /URI\n/URI (";
 751            if ($this->encrypted){
 752              $res.=$this->filterText($this->ARC4($o['info']));
 753            } else {
 754              $res.=$this->filterText($o['info']);
 755            }
 756            $res.=")";
 757            break;
 758        }
 759        $res.="\n>>\nendobj";
 760        return $res;
 761        break;
 762    }
 763  }
 764  
 765  /**
 766  * an annotation object, this will add an annotation to the current page.
 767  * initially will support just link annotations
 768  */
 769  function o_annotation($id,$action,$options=''){
 770    if ($action!='new'){
 771      $o =& $this->objects[$id];
 772    }
 773    switch ($action){
 774      case 'new':
 775        // add the annotation to the current page
 776        $pageId = $this->currentPage;
 777        $this->o_page($pageId,'annot',$id);
 778        // and add the action object which is going to be required
 779        switch($options['type']){
 780          case 'link':
 781            $this->objects[$id]=array('t'=>'annotation','info'=>$options);
 782            $this->numObj++;
 783            $this->o_action($this->numObj,'new',$options['url']);
 784            $this->objects[$id]['info']['actionId']=$this->numObj;
 785            break;
 786          case 'ilink':
 787            // this is to a named internal link
 788            $label = $options['label'];
 789            $this->objects[$id]=array('t'=>'annotation','info'=>$options);
 790            $this->numObj++;
 791            $this->o_action($this->numObj,'new',array('type'=>'ilink','label'=>$label));
 792            $this->objects[$id]['info']['actionId']=$this->numObj;
 793            break;
 794        }
 795        break;
 796      case 'out':
 797        $res="\n".$id." 0 obj\n<< /Type /Annot";
 798        switch($o['info']['type']){
 799          case 'link':
 800          case 'ilink':
 801            $res.= "\n/Subtype /Link";
 802            break;
 803        }
 804        $res.="\n/A ".$o['info']['actionId']." 0 R";
 805        $res.="\n/Border [0 0 0]";
 806        $res.="\n/H /I";
 807        $res.="\n/Rect [ ";
 808        foreach($o['info']['rect'] as $v){
 809          $res.= sprintf("%.4f ",$v);
 810        }
 811        $res.="]";
 812        $res.="\n>>\nendobj";
 813        return $res;
 814        break;
 815    }
 816  }
 817  
 818  /**
 819  * a page object, it also creates a contents object to hold its contents
 820  */
 821  function o_page($id,$action,$options=''){
 822    if ($action!='new'){
 823      $o =& $this->objects[$id];
 824    }
 825    switch ($action){
 826      case 'new':
 827        $this->numPages++;
 828        $this->objects[$id]=array('t'=>'page','info'=>array('parent'=>$this->currentNode,'pageNum'=>$this->numPages));
 829        if (is_array($options)){
 830          // then this must be a page insertion, array shoudl contain 'rid','pos'=[before|after]
 831          $options['id']=$id;
 832          $this->o_pages($this->currentNode,'page',$options);
 833        } else {
 834          $this->o_pages($this->currentNode,'page',$id);
 835        }
 836        $this->currentPage=$id;
 837        //make a contents object to go with this page
 838        $this->numObj++;
 839        $this->o_contents($this->numObj,'new',$id);
 840        $this->currentContents=$this->numObj;
 841        $this->objects[$id]['info']['contents']=array();
 842        $this->objects[$id]['info']['contents'][]=$this->numObj;
 843        $match = ($this->numPages%2 ? 'odd' : 'even');
 844        foreach($this->addLooseObjects as $oId=>$target){
 845          if ($target=='all' || $match==$target){
 846            $this->objects[$id]['info']['contents'][]=$oId;
 847          }
 848        }
 849        break;
 850      case 'content':
 851        $o['info']['contents'][]=$options;
 852        break;
 853      case 'annot':
 854        // add an annotation to this page
 855        if (!isset($o['info']['annot'])){
 856          $o['info']['annot']=array();
 857        }
 858        // $options should contain the id of the annotation dictionary
 859        $o['info']['annot'][]=$options;
 860        break;
 861      case 'out':
 862        $res="\n".$id." 0 obj\n<< /Type /Page";
 863        $res.="\n/Parent ".$o['info']['parent']." 0 R";
 864        if (isset($o['info']['annot'])){
 865          $res.="\n/Annots [";
 866          foreach($o['info']['annot'] as $aId){
 867            $res.=" ".$aId." 0 R";
 868          }
 869          $res.=" ]";
 870        }
 871        $count = count($o['info']['contents']);
 872        if ($count==1){
 873          $res.="\n/Contents ".$o['info']['contents'][0]." 0 R";
 874        } else if ($count>1){
 875          $res.="\n/Contents [\n";
 876          foreach ($o['info']['contents'] as $cId){
 877            $res.=$cId." 0 R\n";
 878          }
 879          $res.="]";
 880        }
 881        $res.="\n>>\nendobj";
 882        return $res;
 883        break;
 884    }
 885  }
 886  
 887  /**
 888  * the contents objects hold all of the content which appears on pages
 889  */
 890  function o_contents($id,$action,$options=''){
 891    if ($action!='new'){
 892      $o =& $this->objects[$id];
 893    }
 894    switch ($action){
 895      case 'new':
 896        $this->objects[$id]=array('t'=>'contents','c'=>'','info'=>array());
 897        if (strlen($options) && intval($options)){
 898          // then this contents is the primary for a page
 899          $this->objects[$id]['onPage']=$options;
 900        } else if ($options=='raw'){
 901          // then this page contains some other type of system object
 902          $this->objects[$id]['raw']=1;
 903        }
 904        break;
 905      case 'add':
 906        // add more options to the decleration
 907        foreach ($options as $k=>$v){
 908          $o['info'][$k]=$v;
 909        }
 910      case 'out':
 911        $tmp=$o['c'];
 912        $res= "\n".$id." 0 obj\n";
 913        if (isset($this->objects[$id]['raw'])){
 914          $res.=$tmp;
 915        } else {
 916          $res.= "<<";
 917          if (function_exists('gzcompress') && $this->options['compression']){
 918            // then implement ZLIB based compression on this content stream
 919            $res.=" /Filter /FlateDecode";
 920            $tmp = gzcompress($tmp);
 921          }
 922          if ($this->encrypted){
 923            $this->encryptInit($id);
 924            $tmp = $this->ARC4($tmp);
 925          }
 926          foreach($o['info'] as $k=>$v){
 927            $res .= "\n/".$k.' '.$v;
 928          }
 929          $res.="\n/Length ".strlen($tmp)." >>\nstream\n".$tmp."\nendstream";
 930        }
 931        $res.="\nendobj\n";
 932        return $res;
 933        break;
 934    }
 935  }
 936  
 937  /**
 938  * an image object, will be an XObject in the document, includes description and data
 939  */
 940  function o_image($id,$action,$options=''){
 941    if ($action!='new'){
 942      $o =& $this->objects[$id];
 943    }
 944    switch($action){
 945      case 'new':
 946        // make the new object
 947        $this->objects[$id]=array('t'=>'image','data'=>$options['data'],'info'=>array());
 948        $this->objects[$id]['info']['Type']='/XObject';
 949        $this->objects[$id]['info']['Subtype']='/Image';
 950        $this->objects[$id]['info']['Width']=$options['iw'];
 951        $this->objects[$id]['info']['Height']=$options['ih'];
 952        if (!isset($options['type']) || $options['type']=='jpg'){
 953          if (!isset($options['channels'])){
 954            $options['channels']=3;
 955          }
 956          switch($options['channels']){
 957            case 1:
 958              $this->objects[$id]['info']['ColorSpace']='/DeviceGray';
 959              break;
 960            default:
 961              $this->objects[$id]['info']['ColorSpace']='/DeviceRGB';
 962              break;
 963          }
 964          $this->objects[$id]['info']['Filter']='/DCTDecode';
 965          $this->objects[$id]['info']['BitsPerComponent']=8;
 966        } else if ($options['type']=='png'){
 967          $this->objects[$id]['info']['Filter']='/FlateDecode';
 968          $this->objects[$id]['info']['DecodeParms']='<< /Predictor 15 /Colors '.$options['ncolor'].' /Columns '.$options['iw'].' /BitsPerComponent '.$options['bitsPerComponent'].'>>';
 969          if (strlen($options['pdata'])){
 970            $tmp = ' [ /Indexed /DeviceRGB '.(strlen($options['pdata'])/3-1).' ';
 971            $this->numObj++;
 972            $this->o_contents($this->numObj,'new');
 973            $this->objects[$this->numObj]['c']=$options['pdata'];
 974            $tmp.=$this->numObj.' 0 R';
 975            $tmp .=' ]';
 976            $this->objects[$id]['info']['ColorSpace'] = $tmp;
 977            if (isset($options['transparency'])){
 978              switch($options['transparency']['type']){
 979                case 'indexed':
 980                  $tmp=' [ '.$options['transparency']['data'].' '.$options['transparency']['data'].'] ';
 981                  $this->objects[$id]['info']['Mask'] = $tmp;
 982                  break;
 983              }
 984            }
 985          } else {
 986            $this->objects[$id]['info']['ColorSpace']='/'.$options['color'];
 987          }
 988          $this->objects[$id]['info']['BitsPerComponent']=$options['bitsPerComponent'];
 989        }
 990        // assign it a place in the named resource dictionary as an external object, according to
 991        // the label passed in with it.
 992        $this->o_pages($this->currentNode,'xObject',array('label'=>$options['label'],'objNum'=>$id));
 993        // also make sure that we have the right procset object for it.
 994        $this->o_procset($this->procsetObjectId,'add','ImageC');
 995        break;
 996      case 'out':
 997        $tmp=$o['data'];
 998        $res= "\n".$id." 0 obj\n<<";
 999        foreach($o['info'] as $k=>$v){
1000          $res.="\n/".$k.' '.$v;
1001        }
1002        if ($this->encrypted){
1003          $this->encryptInit($id);
1004          $tmp = $this->ARC4($tmp);
1005        }
1006        $res.="\n/Length ".strlen($tmp)." >>\nstream\n".$tmp."\nendstream\nendobj\n";
1007        return $res;
1008        break;
1009    }
1010  }
1011  
1012  /**
1013  * encryption object.
1014  */
1015  function o_encryption($id,$action,$options=''){
1016    if ($action!='new'){
1017      $o =& $this->objects[$id];
1018    }
1019    switch($action){
1020      case 'new':
1021        // make the new object
1022        $this->objects[$id]=array('t'=>'encryption','info'=>$options);
1023        $this->arc4_objnum=$id;
1024        // figure out the additional paramaters required
1025        $pad = chr(0x28).chr(0xBF).chr(0x4E).chr(0x5E).chr(0x4E).chr(0x75).chr(0x8A).chr(0x41).chr(0x64).chr(0x00).chr(0x4E).chr(0x56).chr(0xFF).chr(0xFA).chr(0x01).chr(0x08).chr(0x2E).chr(0x2E).chr(0x00).chr(0xB6).chr(0xD0).chr(0x68).chr(0x3E).chr(0x80).chr(0x2F).chr(0x0C).chr(0xA9).chr(0xFE).chr(0x64).chr(0x53).chr(0x69).chr(0x7A);
1026        $len = strlen($options['owner']);
1027        if ($len>32){
1028          $owner = substr($options['owner'],0,32);
1029        } else if ($len<32){
1030          $owner = $options['owner'].substr($pad,0,32-$len);
1031        } else {
1032          $owner = $options['owner'];
1033        }
1034        $len = strlen($options['user']);
1035        if ($len>32){
1036          $user = substr($options['user'],0,32);
1037        } else if ($len<32){
1038          $user = $options['user'].substr($pad,0,32-$len);
1039        } else {
1040          $user = $options['user'];
1041        }
1042        $tmp = $this->md5_16($owner);
1043        $okey = substr($tmp,0,5);
1044        $this->ARC4_init($okey);
1045        $ovalue=$this->ARC4($user);
1046        $this->objects[$id]['info']['O']=$ovalue;
1047        // now make the u value, phew.
1048        $tmp = $this->md5_16($user.$ovalue.chr($options['p']).chr(255).chr(255).chr(255).$this->fileIdentifier);
1049        $ukey = substr($tmp,0,5);
1050  
1051        $this->ARC4_init($ukey);
1052        $this->encryptionKey = $ukey;
1053        $this->encrypted=1;
1054        $uvalue=$this->ARC4($pad);
1055  
1056        $this->objects[$id]['info']['U']=$uvalue;
1057        $this->encryptionKey=$ukey;
1058  
1059        // initialize the arc4 array
1060        break;
1061      case 'out':
1062        $res= "\n".$id." 0 obj\n<<";
1063        $res.="\n/Filter /Standard";
1064        $res.="\n/V 1";
1065        $res.="\n/R 2";
1066        $res.="\n/O (".$this->filterText($o['info']['O']).')';
1067        $res.="\n/U (".$this->filterText($o['info']['U']).')';
1068        // and the p-value needs to be converted to account for the twos-complement approach
1069        $o['info']['p'] = (($o['info']['p']^255)+1)*-1;
1070        $res.="\n/P ".($o['info']['p']);
1071        $res.="\n>>\nendobj\n";
1072  
1073        return $res;
1074        break;
1075    }
1076  }
1077  
1078  /**
1079  * ARC4 functions
1080  * A series of function to implement ARC4 encoding in PHP
1081  */
1082  
1083  /**
1084  * calculate the 16 byte version of the 128 bit md5 digest of the string
1085  */
1086  function md5_16($string){
1087    $tmp = md5($string);
1088    $out='';
1089    for ($i=0;$i<=30;$i=$i+2){
1090      $out.=chr(hexdec(substr($tmp,$i,2)));
1091    }
1092    return $out;
1093  }
1094  
1095  /**
1096  * initialize the encryption for processing a particular object
1097  */
1098  function encryptInit($id){
1099    $tmp = $this->encryptionKey;
1100    $hex = dechex($id);
1101    if (strlen($hex)<6){
1102      $hex = substr('000000',0,6-strlen($hex)).$hex;
1103    }
1104    $tmp.= chr(hexdec(substr($hex,4,2))).chr(hexdec(substr($hex,2,2))).chr(hexdec(substr($hex,0,2))).chr(0).chr(0);
1105    $key = $this->md5_16($tmp);
1106    $this->ARC4_init(substr($key,0,10));
1107  }
1108  
1109  /**
1110  * initialize the ARC4 encryption
1111  */
1112  function ARC4_init($key=''){
1113    $this->arc4 = '';
1114    // setup the control array
1115    if (strlen($key)==0){
1116      return;
1117    }
1118    $k = '';
1119    while(strlen($k)<256){
1120      $k.=$key;
1121    }
1122    $k=substr($k,0,256);
1123    for ($i=0;$i<256;$i++){
1124      $this->arc4 .= chr($i);
1125    }
1126    $j=0;
1127    for ($i=0;$i<256;$i++){
1128      $t = $this->arc4[$i];
1129      $j = ($j + ord($t) + ord($k[$i]))%256;
1130      $this->arc4[$i]=$this->arc4[$j];
1131      $this->arc4[$j]=$t;
1132    }
1133  }
1134  
1135  /**
1136  * ARC4 encrypt a text string
1137  */
1138  function ARC4($text){
1139    $len=strlen($text);
1140    $a=0;
1141    $b=0;
1142    $c = $this->arc4;
1143    $out='';
1144    for ($i=0;$i<$len;$i++){
1145      $a = ($a+1)%256;
1146      $t= $c[$a];
1147      $b = ($b+ord($t))%256;
1148      $c[$a]=$c[$b];
1149      $c[$b]=$t;
1150      $k = ord($c[(ord($c[$a])+ord($c[$b]))%256]);
1151      $out.=chr(ord($text[$i]) ^ $k);
1152    }
1153  
1154    return $out;
1155  }
1156  
1157  /**
1158  * functions which can be called to adjust or add to the document
1159  */
1160  
1161  /**
1162  * add a link in the document to an external URL
1163  */
1164  function addLink($url,$x0,$y0,$x1,$y1){
1165    $this->numObj++;
1166    $info = array('type'=>'link','url'=>$url,'rect'=>array($x0,$y0,$x1,$y1));
1167    $this->o_annotation($this->numObj,'new',$info);
1168  }
1169  
1170  /**
1171  * add a link in the document to an internal destination (ie. within the document)
1172  */
1173  function addInternalLink($label,$x0,$y0,$x1,$y1){
1174    $this->numObj++;
1175    $info = array('type'=>'ilink','label'=>$label,'rect'=>array($x0,$y0,$x1,$y1));
1176    $this->o_annotation($this->numObj,'new',$info);
1177  }
1178  
1179  /**
1180  * set the encryption of the document
1181  * can be used to turn it on and/or set the passwords which it will have.
1182  * also the functions that the user will have are set here, such as print, modify, add
1183  */
1184  function setEncryption($userPass='',$ownerPass='',$pc=array()){
1185    $p=bindec(11000000);
1186  
1187    $options = array(
1188       'print'=>4
1189      ,'modify'=>8
1190      ,'copy'=>16
1191      ,'add'=>32
1192    );
1193    foreach($pc as $k=>$v){
1194      if ($v && isset($options[$k])){
1195        $p+=$options[$k];
1196      } else if (isset($options[$v])){
1197        $p+=$options[$v];
1198      }
1199    }
1200    // implement encryption on the document
1201    if ($this->arc4_objnum == 0){
1202      // then the block does not exist already, add it.
1203      $this->numObj++;
1204      if (strlen($ownerPass)==0){
1205        $ownerPass=$userPass;
1206      }
1207      $this->o_encryption($this->numObj,'new',array('user'=>$userPass,'owner'=>$ownerPass,'p'=>$p));
1208    }
1209  }
1210  
1211  /**
1212  * should be used for internal checks, not implemented as yet
1213  */
1214  function checkAllHere(){
1215  }
1216  
1217  /**
1218  * return the pdf stream as a string returned from the function
1219  */
1220  function output($debug=0){
1221  
1222    if ($debug){
1223      // turn compression off
1224      $this->options['compression']=0;
1225    }
1226  
1227    if ($this->arc4_objnum){
1228      $this->ARC4_init($this->encryptionKey);
1229    }
1230  
1231    $this->checkAllHere();
1232  
1233    $xref=array();
1234    $content="%PDF-1.3\n%����\n";
1235  //  $content="%PDF-1.3\n";
1236    $pos=strlen($content);
1237    foreach($this->objects as $k=>$v){
1238      $tmp='o_'.$v['t'];
1239      $cont=$this->$tmp($k,'out');
1240      $content.=$cont;
1241      $xref[]=$pos;
1242      $pos+=strlen($cont);
1243    }
1244    $content.="\nxref\n0 ".(count($xref)+1)."\n0000000000 65535 f \n";
1245    foreach($xref as $p){
1246      $content.=substr('0000000000',0,10-strlen($p)).$p." 00000 n \n";
1247    }
1248    $content.="\ntrailer\n  << /Size ".(count($xref)+1)."\n     /Root 1 0 R\n     /Info ".$this->infoObject." 0 R\n";
1249    // if encryption has been applied to this document then add the marker for this dictionary
1250    if ($this->arc4_objnum > 0){
1251      $content .= "/Encrypt ".$this->arc4_objnum." 0 R\n";
1252    }
1253    if (strlen($this->fileIdentifier)){
1254      $content .= "/ID[<".$this->fileIdentifier."><".$this->fileIdentifier.">]\n";
1255    }
1256    $content .= "  >>\nstartxref\n".$pos."\n%%EOF\n";
1257    return $content;
1258  }
1259  
1260  /**
1261  * intialize a new document
1262  * if this is called on an existing document results may be unpredictable, but the existing document would be lost at minimum
1263  * this function is called automatically by the constructor function
1264  *
1265  * @access private
1266  */
1267  function newDocument($pageSize=array(0,0,612,792)){
1268    $this->numObj=0;
1269    $this->objects = array();
1270  
1271    $this->numObj++;
1272    $this->o_catalog($this->numObj,'new');
1273  
1274    $this->numObj++;
1275    $this->o_outlines($this->numObj,'new');
1276  
1277    $this->numObj++;
1278    $this->o_pages($this->numObj,'new');
1279  
1280    $this->o_pages($this->numObj,'mediaBox',$pageSize);
1281    $this->currentNode = 3;
1282  
1283    $this->numObj++;
1284    $this->o_procset($this->numObj,'new');
1285  
1286    $this->numObj++;
1287    $this->o_info($this->numObj,'new');
1288  
1289    $this->numObj++;
1290    $this->o_page($this->numObj,'new');
1291  
1292    // need to store the first page id as there is no way to get it to the user during
1293    // startup
1294    $this->firstPageId = $this->currentContents;
1295  }
1296  
1297  /**
1298  * open the font file and return a php structure containing it.
1299  * first check if this one has been done before and saved in a form more suited to php
1300  * note that if a php serialized version does not exist it will try and make one, but will
1301  * require write access to the directory to do it... it is MUCH faster to have these serialized
1302  * files.
1303  *
1304  * @access private
1305  */
1306  function openFont($font){
1307    // assume that $font contains both the path and perhaps the extension to the file, split them
1308    $pos=strrpos($font,'/');
1309    if ($pos===false){
1310      $dir = './';
1311      $name = $font;
1312    } else {
1313      $dir=substr($font,0,$pos+1);
1314      $name=substr($font,$pos+1);
1315    }
1316  
1317    if (substr($name,-4)=='.afm'){
1318      $name=substr($name,0,strlen($name)-4);
1319    }
1320    $this->addMessage('openFont: '.$font.' - '.$name);
1321    if (file_exists($dir.'php_'.$name.'.afm')){
1322      $this->addMessage('openFont: php file exists '.$dir.'php_'.$name.'.afm');
1323      $tmp = file($dir.'php_'.$name.'.afm');
1324      $this->fonts[$font]=unserialize($tmp[0]);
1325      if (!isset($this->fonts[$font]['_version_']) || $this->fonts[$font]['_version_']<1){
1326        // if the font file is old, then clear it out and prepare for re-creation
1327        $this->addMessage('openFont: clear out, make way for new version.');
1328        unset($this->fonts[$font]);
1329      }
1330    }
1331    if (!isset($this->fonts[$font]) && file_exists($dir.$name.'.afm')){
1332      // then rebuild the php_<font>.afm file from the <font>.afm file
1333      $this->addMessage('openFont: build php file from '.$dir.$name.'.afm');
1334      $data = array();
1335      $file = file($dir.$name.'.afm');
1336      foreach ($file as $rowA){
1337        $row=trim($rowA);
1338        $pos=strpos($row,' ');
1339        if ($pos){
1340          // then there must be some keyword
1341          $key = substr($row,0,$pos);
1342          switch ($key){
1343            case 'FontName':
1344            case 'FullName':
1345            case 'FamilyName':
1346            case 'Weight':
1347            case 'ItalicAngle':
1348            case 'IsFixedPitch':
1349            case 'CharacterSet':
1350            case 'UnderlinePosition':
1351            case 'UnderlineThickness':
1352            case 'Version':
1353            case 'EncodingScheme':
1354            case 'CapHeight':
1355            case 'XHeight':
1356            case 'Ascender':
1357            case 'Descender':
1358            case 'StdHW':
1359            case 'StdVW':
1360            case 'StartCharMetrics':
1361              $data[$key]=trim(substr($row,$pos));
1362              break;
1363            case 'FontBBox':
1364              $data[$key]=explode(' ',trim(substr($row,$pos)));
1365              break;
1366            case 'C':
1367              //C 39 ; WX 222 ; N quoteright ; B 53 463 157 718 ;
1368              $bits=explode(';',trim($row));
1369              $dtmp=array();
1370              foreach($bits as $bit){
1371                $bits2 = explode(' ',trim($bit));
1372                if (strlen($bits2[0])){
1373                  if (count($bits2)>2){
1374                    $dtmp[$bits2[0]]=array();
1375                    for ($i=1;$i<count($bits2);$i++){
1376                      $dtmp[$bits2[0]][]=$bits2[$i];
1377                    }
1378                  } else if (count($bits2)==2){
1379                    $dtmp[$bits2[0]]=$bits2[1];
1380                  }
1381                }
1382              }
1383              if ($dtmp['C']>=0){
1384                $data['C'][$dtmp['C']]=$dtmp;
1385                $data['C'][$dtmp['N']]=$dtmp;
1386              } else {
1387                $data['C'][$dtmp['N']]=$dtmp;
1388              }
1389              break;
1390            case 'KPX':
1391              //KPX Adieresis yacute -40
1392              $bits=explode(' ',trim($row));
1393              $data['KPX'][$bits[1]][$bits[2]]=$bits[3];
1394              break;
1395          }
1396        }
1397      }
1398      $data['_version_']=1;
1399      $this->fonts[$font]=$data;
1400      $fp = fopen($dir.'php_'.$name.'.afm','w');
1401      fwrite($fp,serialize($data));
1402      fclose($fp);
1403    } else if (!isset($this->fonts[$font])){
1404      $this->addMessage('openFont: no font file found');
1405  //    echo 'Font not Found '.$font;
1406    }
1407  }
1408  
1409  /**
1410  * if the font is not loaded then load it and make the required object
1411  * else just make it the current font
1412  * the encoding array can contain 'encoding'=> 'none','WinAnsiEncoding','MacRomanEncoding' or 'MacExpertEncoding'
1413  * note that encoding='none' will need to be used for symbolic fonts
1414  * and 'differences' => an array of mappings between numbers 0->255 and character names.
1415  *
1416  */
1417  function selectFont($fontName,$encoding='',$set=1){
1418    if (!isset($this->fonts[$fontName])){
1419      // load the file
1420      $this->openFont($fontName);
1421      if (isset($this->fonts[$fontName])){
1422        $this->numObj++;
1423        $this->numFonts++;
1424        $pos=strrpos($fontName,'/');
1425  //      $dir=substr($fontName,0,$pos+1);
1426        $name=substr($fontName,$pos+1);
1427        if (substr($name,-4)=='.afm'){
1428          $name=substr($name,0,strlen($name)-4);
1429        }
1430        $options=array('name'=>$name);
1431        if (is_array($encoding)){
1432          // then encoding and differences might be set
1433          if (isset($encoding['encoding'])){
1434            $options['encoding']=$encoding['encoding'];
1435          }
1436          if (isset($encoding['differences'])){
1437            $options['differences']=$encoding['differences'];
1438          }
1439        } else if (strlen($encoding)){
1440          // then perhaps only the encoding has been set
1441          $options['encoding']=$encoding;
1442        }
1443        $fontObj = $this->numObj;
1444        $this->o_font($this->numObj,'new',$options);
1445        $this->fonts[$fontName]['fontNum']=$this->numFonts;
1446        // if this is a '.afm' font, and there is a '.pfa' file to go with it ( as there
1447        // should be for all non-basic fonts), then load it into an object and put the
1448        // references into the font object
1449        $basefile = substr($fontName,0,strlen($fontName)-4);
1450        if (file_exists($basefile.'.pfb')){
1451          $fbtype = 'pfb';
1452        } else if (file_exists($basefile.'.ttf')){
1453          $fbtype = 'ttf';
1454        } else {
1455          $fbtype='';
1456        }
1457        $fbfile = $basefile.'.'.$fbtype;
1458  
1459  //      $pfbfile = substr($fontName,0,strlen($fontName)-4).'.pfb';
1460  //      $ttffile = substr($fontName,0,strlen($fontName)-4).'.ttf';
1461        $this->addMessage('selectFont: checking for - '.$fbfile);
1462        if (substr($fontName,-4)=='.afm' && strlen($fbtype) ){
1463          $adobeFontName = $this->fonts[$fontName]['FontName'];
1464  //        $fontObj = $this->numObj;
1465          $this->addMessage('selectFont: adding font file - '.$fbfile.' - '.$adobeFontName);
1466          // find the array of fond widths, and put that into an object.
1467          $firstChar = -1;
1468          $lastChar = 0;
1469          $widths = array();
1470          foreach ($this->fonts[$fontName]['C'] as $num=>$d){
1471            if (intval($num)>0 || $num=='0'){
1472              if ($lastChar>0 && $num>$lastChar+1){
1473                for($i=$lastChar+1;$i<$num;$i++){
1474                  $widths[] = 0;
1475                }
1476              }
1477              $widths[] = $d['WX'];
1478              if ($firstChar==-1){
1479                $firstChar = $num;
1480              }
1481              $lastChar = $num;
1482            }
1483          }
1484          // also need to adjust the widths for the differences array
1485          if (isset($options['differences'])){
1486            foreach($options['differences'] as $charNum=>$charName){
1487              if ($charNum>$lastChar){
1488                for($i=$lastChar+1;$i<=$charNum;$i++){
1489                  $widths[]=0;
1490                }
1491                $lastChar=$charNum;
1492              }
1493              if (isset($this->fonts[$fontName]['C'][$charName])){
1494                $widths[$charNum-$firstChar]=$this->fonts[$fontName]['C'][$charName]['WX'];
1495              }
1496            }
1497          }
1498          $this->addMessage('selectFont: FirstChar='.$firstChar);
1499          $this->addMessage('selectFont: LastChar='.$lastChar);
1500          $this->numObj++;
1501          $this->o_contents($this->numObj,'new','raw');
1502          $this->objects[$this->numObj]['c'].='[';
1503          foreach($widths as $width){
1504            $this->objects[$this->numObj]['c'].=' '.$width;
1505          }
1506          $this->objects[$this->numObj]['c'].=' ]';
1507          $widthid = $this->numObj;
1508  
1509          // load the pfb file, and put that into an object too.
1510          // note that pdf supports only binary format type 1 font files, though there is a
1511          // simple utility to convert them from pfa to pfb.
1512          $fp = fopen($fbfile,'rb');
1513          $tmp = get_magic_quotes_runtime();
1514          set_magic_quotes_runtime(0);
1515          $data = fread($fp,filesize($fbfile));
1516          set_magic_quotes_runtime($tmp);
1517          fclose($fp);
1518  
1519          // create the font descriptor
1520          $this->numObj++;
1521          $fontDescriptorId = $this->numObj;
1522          $this->numObj++;
1523          $pfbid = $this->numObj;
1524          // determine flags (more than a little flakey, hopefully will not matter much)
1525          $flags=0;
1526          if ($this->fonts[$fontName]['ItalicAngle']!=0){ $flags+=pow(2,6); }
1527          if ($this->fonts[$fontName]['IsFixedPitch']=='true'){ $flags+=1; }
1528          $flags+=pow(2,5); // assume non-sybolic
1529  
1530          $list = array('Ascent'=>'Ascender','CapHeight'=>'CapHeight','Descent'=>'Descender','FontBBox'=>'FontBBox','ItalicAngle'=>'ItalicAngle');
1531          $fdopt = array(
1532           'Flags'=>$flags
1533           ,'FontName'=>$adobeFontName
1534           ,'StemV'=>100  // don't know what the value for this should be!
1535          );
1536          foreach($list as $k=>$v){
1537            if (isset($this->fonts[$fontName][$v])){
1538              $fdopt[$k]=$this->fonts[$fontName][$v];
1539            }
1540          }
1541  
1542          if ($fbtype=='pfb'){
1543            $fdopt['FontFile']=$pfbid;
1544          } else if ($fbtype=='ttf'){
1545            $fdopt['FontFile2']=$pfbid;
1546          }
1547          $this->o_fontDescriptor($fontDescriptorId,'new',$fdopt);
1548  
1549          // embed the font program
1550          $this->o_contents($this->numObj,'new');
1551          $this->objects[$pfbid]['c'].=$data;
1552          // determine the cruicial lengths within this file
1553          if ($fbtype=='pfb'){
1554            $l1 = strpos($data,'eexec')+6;
1555            $l2 = strpos($data,'00000000')-$l1;
1556            $l3 = strlen($data)-$l2-$l1;
1557            $this->o_contents($this->numObj,'add',array('Length1'=>$l1,'Length2'=>$l2,'Length3'=>$l3));
1558          } else if ($fbtype=='ttf'){
1559            $l1 = strlen($data);
1560            $this->o_contents($this->numObj,'add',array('Length1'=>$l1));
1561          }
1562  
1563  
1564          // tell the font object about all this new stuff
1565          $tmp = array('BaseFont'=>$adobeFontName,'Widths'=>$widthid
1566                                        ,'FirstChar'=>$firstChar,'LastChar'=>$lastChar
1567                                        ,'FontDescriptor'=>$fontDescriptorId);
1568          if ($fbtype=='ttf'){
1569            $tmp['SubType']='TrueType';
1570          }
1571          $this->addMessage('adding extra info to font.('.$fontObj.')');
1572          foreach($tmp as $fk=>$fv){
1573            $this->addMessage($fk." : ".$fv);
1574          }
1575          $this->o_font($fontObj,'add',$tmp);
1576  
1577        } else {
1578          $this->addMessage('selectFont: pfb or ttf file not found, ok if this is one of the 14 standard fonts');
1579        }
1580  
1581  
1582        // also set the differences here, note that this means that these will take effect only the
1583        //first time that a font is selected, else they are ignored
1584        if (isset($options['differences'])){
1585          $this->fonts[$fontName]['differences']=$options['differences'];
1586        }
1587      }
1588    }
1589    if ($set && isset($this->fonts[$fontName])){
1590      // so if for some reason the font was not set in the last one then it will not be selected
1591      $this->currentBaseFont=$fontName;
1592      // the next line means that if a new font is selected, then the current text state will be
1593      // applied to it as well.
1594      $this->setCurrentFont();
1595    }
1596    return $this->currentFontNum;
1597  }
1598  
1599  /**
1600  * sets up the current font, based on the font families, and the current text state
1601  * note that this system is quite flexible, a <b><i> font can be completely different to a
1602  * <i><b> font, and even <b><b> will have to be defined within the family to have meaning
1603  * This function is to be called whenever the currentTextState is changed, it will update
1604  * the currentFont setting to whatever the appropriatte family one is.
1605  * If the user calls selectFont themselves then that will reset the currentBaseFont, and the currentFont
1606  * This function will change the currentFont to whatever it should be, but will not change the
1607  * currentBaseFont.
1608  *
1609  * @access private
1610  */
1611  function setCurrentFont(){
1612    if (strlen($this->currentBaseFont)==0){
1613      // then assume an initial font
1614      $this->selectFont('./fonts/Helvetica.afm');
1615    }
1616    $cf = substr($this->currentBaseFont,strrpos($this->currentBaseFont,'/')+1);
1617    if (strlen($this->currentTextState)
1618      && isset($this->fontFamilies[$cf])
1619        && isset($this->fontFamilies[$cf][$this->currentTextState])){
1620      // then we are in some state or another
1621      // and this font has a family, and the current setting exists within it
1622      // select the font, then return it
1623      $nf = substr($this->currentBaseFont,0,strrpos($this->currentBaseFont,'/')+1).$this->fontFamilies[$cf][$this->currentTextState];
1624      $this->selectFont($nf,'',0);
1625      $this->currentFont = $nf;
1626      $this->currentFontNum = $this->fonts[$nf]['fontNum'];
1627    } else {
1628      // the this font must not have the right family member for the current state
1629      // simply assume the base font
1630      $this->currentFont = $this->currentBaseFont;
1631      $this->currentFontNum = $this->fonts[$this->currentFont]['fontNum'];
1632    }
1633  }
1634  
1635  /**
1636  * function for the user to find out what the ID is of the first page that was created during
1637  * startup - useful if they wish to add something to it later.
1638  */
1639  function getFirstPageId(){
1640    return $this->firstPageId;
1641  }
1642  
1643  /**
1644  * add content to the currently active object
1645  *
1646  * @access private
1647  */
1648  function addContent($content){
1649    $this->objects[$this->currentContents]['c'].=$content;
1650  }
1651  
1652  /**
1653  * sets the colour for fill operations
1654  */
1655  function setColor($r,$g,$b,$force=0){
1656    if ($r>=0 && ($force || $r!=$this->currentColour['r'] || $g!=$this->currentColour['g'] || $b!=$this->currentColour['b'])){
1657      $this->objects[$this->currentContents]['c'].="\n".sprintf('%.3f',$r).' '.sprintf('%.3f',$g).' '.sprintf('%.3f',$b).' rg';
1658      $this->currentColour=array('r'=>$r,'g'=>$g,'b'=>$b);
1659    }
1660  }
1661  
1662  /**
1663  * sets the colour for stroke operations
1664  */
1665  function setStrokeColor($r,$g,$b,$force=0){
1666    if ($r>=0 && ($force || $r!=$this->currentStrokeColour['r'] || $g!=$this->currentStrokeColour['g'] || $b!=$this->currentStrokeColour['b'])){
1667      $this->objects[$this->currentContents]['c'].="\n".sprintf('%.3f',$r).' '.sprintf('%.3f',$g).' '.sprintf('%.3f',$b).' RG';
1668      $this->currentStrokeColour=array('r'=>$r,'g'=>$g,'b'=>$b);
1669    }
1670  }
1671  
1672  /**
1673  * draw a line from one set of coordinates to another
1674  */
1675  function line($x1,$y1,$x2,$y2){
1676    $this->objects[$this->currentContents]['c'].="\n".sprintf('%.3f',$x1).' '.sprintf('%.3f',$y1).' m '.sprintf('%.3f',$x2).' '.sprintf('%.3f',$y2).' l S';
1677  }
1678  
1679  /**
1680  * draw a bezier curve based on 4 control points
1681  */
1682  function curve($x0,$y0,$x1,$y1,$x2,$y2,$x3,$y3){
1683    // in the current line style, draw a bezier curve from (x0,y0) to (x3,y3) using the other two points
1684    // as the control points for the curve.
1685    $this->objects[$this->currentContents]['c'].="\n".sprintf('%.3f',$x0).' '.sprintf('%.3f',$y0).' m '.sprintf('%.3f',$x1).' '.sprintf('%.3f',$y1);
1686    $this->objects[$this->currentContents]['c'].= ' '.sprintf('%.3f',$x2).' '.sprintf('%.3f',$y2).' '.sprintf('%.3f',$x3).' '.sprintf('%.3f',$y3).' c S';
1687  }
1688  
1689  /**
1690  * draw a part of an ellipse
1691  */
1692  function partEllipse($x0,$y0,$astart,$afinish,$r1,$r2=0,$angle=0,$nSeg=8){
1693    $this->ellipse($x0,$y0,$r1,$r2,$angle,$nSeg,$astart,$afinish,0);
1694  }
1695  
1696  /**
1697  * draw a filled ellipse
1698  */
1699  function filledEllipse($x0,$y0,$r1,$r2=0,$angle=0,$nSeg=8,$astart=0,$afinish=360){
1700    return $this->ellipse($x0,$y0,$r1,$r2=0,$angle,$nSeg,$astart,$afinish,1,1);
1701  }
1702  
1703  /**
1704  * draw an ellipse
1705  * note that the part and filled ellipse are just special cases of this function
1706  *
1707  * draws an ellipse in the current line style
1708  * centered at $x0,$y0, radii $r1,$r2
1709  * if $r2 is not set, then a circle is drawn
1710  * nSeg is not allowed to be less than 2, as this will simply draw a line (and will even draw a
1711  * pretty crappy shape at 2, as we are approximating with bezier curves.
1712  */
1713  function ellipse($x0,$y0,$r1,$r2=0,$angle=0,$nSeg=8,$astart=0,$afinish=360,$close=1,$fill=0){
1714    if ($r1==0){
1715      return;
1716    }
1717    if ($r2==0){
1718      $r2=$r1;
1719    }
1720    if ($nSeg<2){
1721      $nSeg=2;
1722    }
1723  
1724    $astart = deg2rad((float)$astart);
1725    $afinish = deg2rad((float)$afinish);
1726    $totalAngle =$afinish-$astart;
1727  
1728    $dt = $totalAngle/$nSeg;
1729    $dtm = $dt/3;
1730  
1731    if ($angle != 0){
1732      $a = -1*deg2rad((float)$angle);
1733      $tmp = "\n q ";
1734      $tmp .= sprintf('%.3f',cos($a)).' '.sprintf('%.3f',(-1.0*sin($a))).' '.sprintf('%.3f',sin($a)).' '.sprintf('%.3f',cos($a)).' ';
1735      $tmp .= sprintf('%.3f',$x0).' '.sprintf('%.3f',$y0).' cm';
1736      $this->objects[$this->currentContents]['c'].= $tmp;
1737      $x0=0;
1738      $y0=0;
1739    }
1740  
1741    $t1 = $astart;
1742    $a0 = $x0+$r1*cos($t1);
1743    $b0 = $y0+$r2*sin($t1);
1744    $c0 = -$r1*sin($t1);
1745    $d0 = $r2*cos($t1);
1746  
1747    $this->objects[$this->currentContents]['c'].="\n".sprintf('%.3f',$a0).' '.sprintf('%.3f',$b0).' m ';
1748    for ($i=1;$i<=$nSeg;$i++){
1749      // draw this bit of the total curve
1750      $t1 = $i*$dt+$astart;
1751      $a1 = $x0+$r1*cos($t1);
1752      $b1 = $y0+$r2*sin($t1);
1753      $c1 = -$r1*sin($t1);
1754      $d1 = $r2*cos($t1);
1755      $this->objects[$this->currentContents]['c'].="\n".sprintf('%.3f',($a0+$c0*$dtm)).' '.sprintf('%.3f',($b0+$d0*$dtm));
1756      $this->objects[$this->currentContents]['c'].= ' '.sprintf('%.3f',($a1-$c1*$dtm)).' '.sprintf('%.3f',($b1-$d1*$dtm)).' '.sprintf('%.3f',$a1).' '.sprintf('%.3f',$b1).' c';
1757      $a0=$a1;
1758      $b0=$b1;
1759      $c0=$c1;
1760      $d0=$d1;
1761    }
1762    if ($fill){
1763      $this->objects[$this->currentContents]['c'].=' f';
1764    } else {
1765      if ($close){
1766        $this->objects[$this->currentContents]['c'].=' s'; // small 's' signifies closing the path as well
1767      } else {
1768        $this->objects[$this->currentContents]['c'].=' S';
1769      }
1770    }
1771    if ($angle !=0){
1772      $this->objects[$this->currentContents]['c'].=' Q';
1773    }
1774  }
1775  
1776  /**
1777  * this sets the line drawing style.
1778  * width, is the thickness of the line in user units
1779  * cap is the type of cap to put on the line, values can be 'butt','round','square'
1780  *    where the diffference between 'square' and 'butt' is that 'square' projects a flat end past the
1781  *    end of the line.
1782  * join can be 'miter', 'round', 'bevel'
1783  * dash is an array which sets the dash pattern, is a series of length values, which are the lengths of the
1784  *   on and off dashes.
1785  *   (2) represents 2 on, 2 off, 2 on , 2 off ...
1786  *   (2,1) is 2 on, 1 off, 2 on, 1 off.. etc
1787  * phase is a modifier on the dash pattern which is used to shift the point at which the pattern starts.
1788  */
1789  function setLineStyle($width=1,$cap='',$join='',$dash='',$phase=0){
1790  
1791    // this is quite inefficient in that it sets all the parameters whenever 1 is changed, but will fix another day
1792    $string = '';
1793    if ($width>0){
1794      $string.= $width.' w';
1795    }
1796    $ca = array('butt'=>0,'round'=>1,'square'=>2);
1797    if (isset($ca[$cap])){
1798      $string.= ' '.$ca[$cap].' J';
1799    }
1800    $ja = array('miter'=>0,'round'=>1,'bevel'=>2);
1801    if (isset($ja[$join])){
1802      $string.= ' '.$ja[$join].' j';
1803    }
1804    if (is_array($dash)){
1805      $string.= ' [';
1806      foreach ($dash as $len){
1807        $string.=' '.$len;
1808      }
1809      $string.= ' ] '.$phase.' d';
1810    }
1811    $this->currentLineStyle = $string;
1812    $this->objects[$this->currentContents]['c'].="\n".$string;
1813  }
1814  
1815  /**
1816  * draw a polygon, the syntax for this is similar to the GD polygon command
1817  */
1818  function polygon($p,$np,$f=0){
1819    $this->objects[$this->currentContents]['c'].="\n";
1820    $this->objects[$this->currentContents]['c'].=sprintf('%.3f',$p[0]).' '.sprintf('%.3f',$p[1]).' m ';
1821    for ($i=2;$i<$np*2;$i=$i+2){
1822      $this->objects[$this->currentContents]['c'].= sprintf('%.3f',$p[$i]).' '.sprintf('%.3f',$p[$i+1]).' l ';
1823    }
1824    if ($f==1){
1825      $this->objects[$this->currentContents]['c'].=' f';
1826    } else {
1827      $this->objects[$this->currentContents]['c'].=' S';
1828    }
1829  }
1830  
1831  /**
1832  * a filled rectangle, note that it is the width and height of the rectangle which are the secondary paramaters, not
1833  * the coordinates of the upper-right corner
1834  */
1835  function filledRectangle($x1,$y1,$width,$height){
1836    $this->objects[$this->currentContents]['c'].="\n".sprintf('%.3f',$x1).' '.sprintf('%.3f',$y1).' '.sprintf('%.3f',$width).' '.sprintf('%.3f',$height).' re f';
1837  }
1838  
1839  /**
1840  * draw a rectangle, note that it is the width and height of the rectangle which are the secondary paramaters, not
1841  * the coordinates of the upper-right corner
1842  */
1843  function rectangle($x1,$y1,$width,$height){
1844    $this->objects[$this->currentContents]['c'].="\n".sprintf('%.3f',$x1).' '.sprintf('%.3f',$y1).' '.sprintf('%.3f',$width).' '.sprintf('%.3f',$height).' re S';
1845  }
1846  
1847  /**
1848  * add a new page to the document
1849  * this also makes the new page the current active object
1850  */
1851  function newPage($insert=0,$id=0,$pos='after'){
1852  
1853    // if there is a state saved, then go up the stack closing them
1854    // then on the new page, re-open them with the right setings
1855  
1856    if ($this->nStateStack){
1857      for ($i=$this->nStateStack;$i>=1;$i--){
1858        $this->restoreState($i);
1859      }
1860    }
1861  
1862    $this->numObj++;
1863    if ($insert){
1864      // the id from the ezPdf class is the od of the contents of the page, not the page object itself
1865      // query that object to find the parent
1866      $rid = $this->objects[$id]['onPage'];
1867      $opt= array('rid'=>$rid,'pos'=>$pos);
1868      $this->o_page($this->numObj,'new',$opt);
1869    } else {
1870      $this->o_page($this->numObj,'new');
1871    }
1872    // if there is a stack saved, then put that onto the page
1873    if ($this->nStateStack){
1874      for ($i=1;$i<=$this->nStateStack;$i++){
1875        $this->saveState($i);
1876      }
1877    }
1878    // and if there has been a stroke or fill colour set, then transfer them
1879    if ($this->currentColour['r']>=0){
1880      $this->setColor($this->currentColour['r'],$this->currentColour['g'],$this->currentColour['b'],1);
1881    }
1882    if ($this->currentStrokeColour['r']>=0){
1883      $this->setStrokeColor($this->currentStrokeColour['r'],$this->currentStrokeColour['g'],$this->currentStrokeColour['b'],1);
1884    }
1885  
1886    // if there is a line style set, then put this in too
1887    if (strlen($this->currentLineStyle)){
1888      $this->objects[$this->currentContents]['c'].="\n".$this->currentLineStyle;
1889    }
1890  
1891    // the call to the o_page object set currentContents to the present page, so this can be returned as the page id
1892    return $this->currentContents;
1893  }
1894  
1895  /**
1896  * output the pdf code, streaming it to the browser
1897  * the relevant headers are set so that hopefully the browser will recognise it
1898  */
1899  function stream($options=''){
1900    // setting the options allows the adjustment of the headers
1901    // values at the moment are:
1902    // 'Content-Disposition'=>'filename'  - sets the filename, though not too sure how well this will
1903    //        work as in my trial the browser seems to use the filename of the php file with .pdf on the end
1904    // 'Accept-Ranges'=>1 or 0 - if this is not set to 1, then this header is not included, off by default
1905    //    this header seems to have caused some problems despite tha fact that it is supposed to solve
1906    //    them, so I am leaving it off by default.
1907    // 'compress'=> 1 or 0 - apply content stream compression, this is on (1) by default
1908    if (!is_array($options)){
1909      $options=array();
1910    }
1911    if ( isset($options['compress']) && $options['compress']==0){
1912      $tmp = $this->output(1);
1913    } else {
1914      $tmp = $this->output();
1915    }
1916    header("Content-type: application/pdf");
1917    header("Content-Length: ".strlen(ltrim($tmp)));
1918    $fileName = (isset($options['Content-Disposition'])?$options['Content-Disposition']:'file.pdf');
1919    header("Content-Disposition: inline; filename=".$fileName);
1920    if (isset($options['Accept-Ranges']) && $options['Accept-Ranges']==1){
1921      header("Accept-Ranges: ".strlen(ltrim($tmp)));
1922    }
1923    echo ltrim($tmp);
1924  }
1925  
1926  /**
1927  * return the height in units of the current font in the given size
1928  */
1929  function getFontHeight($size){
1930    if (!$this->numFonts){
1931      $this->selectFont('./fonts/Helvetica');
1932    }
1933    // for the current font, and the given size, what is the height of the font in user units
1934    $h = $this->fonts[$this->currentFont]['FontBBox'][3]-$this->fonts[$this->currentFont]['FontBBox'][1];
1935    return $size*$h/1000;
1936  }
1937  
1938  /**
1939  * return the font decender, this will normally return a negative number
1940  * if you add this number to the baseline, you get the level of the bottom of the font
1941  * it is in the pdf user units
1942  */
1943  function getFontDecender($size){
1944    // note that this will most likely return a negative value
1945    if (!$this->numFonts){
1946      $this->selectFont('./fonts/Helvetica');
1947    }
1948    $h = $this->fonts[$this->currentFont]['FontBBox'][1];
1949    return $size*$h/1000;
1950  }
1951  
1952  /**
1953  * filter the text, this is applied to all text just before being inserted into the pdf document
1954  * it escapes the various things that need to be escaped, and so on
1955  *
1956  * @access private
1957  */
1958  function filterText($text){
1959    $text = str_replace('\\','\\\\',$text);
1960    $text = str_replace('(','\(',$text);
1961    $text = str_replace(')','\)',$text);
1962    $text = str_replace('&lt;','<',$text);
1963    $text = str_replace('&gt;','>',$text);
1964    $text = str_replace('&#039;','\'',$text);
1965    $text = str_replace('&quot;','"',$text);
1966    $text = str_replace('&amp;','&',$text);
1967  
1968    return $text;
1969  }
1970  
1971  /**
1972  * given a start position and information about how text is to be laid out, calculate where
1973  * on the page the text will end
1974  *
1975  * @access private
1976  */
1977  function PRVTgetTextPosition($x,$y,$angle,$size,$wa,$text){
1978    // given this information return an array containing x and y for the end position as elements 0 and 1
1979    $w = $this->getTextWidth($size,$text);
1980    // need to adjust for the number of spaces in this text
1981    $words = explode(' ',$text);
1982    $nspaces=count($words)-1;
1983    $w += $wa*$nspaces;
1984    $a = deg2rad((float)$angle);
1985    return array(cos($a)*$w+$x,-sin($a)*$w+$y);
1986  }
1987  
1988  /**
1989  * wrapper function for PRVTcheckTextDirective1
1990  *
1991  * @access private
1992  */
1993  function PRVTcheckTextDirective(&$text,$i,&$f){
1994    $x=0;
1995    $y=0;
1996    return $this->PRVTcheckTextDirective1($text,$i,$f,0,$x,$y);
1997  }
1998  
1999  /**
2000  * checks if the text stream contains a control directive
2001  * if so then makes some changes and returns the number of characters involved in the directive
2002  * this has been re-worked to include everything neccesary to fins the current writing point, so that
2003  * the location can be sent to the callback function if required
2004  * if the directive does not require a font change, then $f should be set to 0
2005  *
2006  * @access private
2007  */
2008  function PRVTcheckTextDirective1(&$text,$i,&$f,$final,&$x,&$y,$size=0,$angle=0,$wordSpaceAdjust=0){
2009    $directive = 0;
2010    $j=$i;
2011    if ($text[$j]=='<'){
2012      $j++;
2013      switch($text[$j]){
2014        case '/':
2015          $j++;
2016          if (strlen($text) <= $j){
2017            return $directive;
2018          }
2019          switch($text[$j]){
2020            case 'b':
2021            case 'i':
2022              $j++;
2023              if ($text[$j]=='>'){
2024                $p = strrpos($this->currentTextState,$text[$j-1]);
2025                if ($p !== false){
2026                  // then there is one to remove
2027                  $this->currentTextState = substr($this->currentTextState,0,$p).substr($this->currentTextState,$p+1);
2028                }
2029                $directive=$j-$i+1;
2030              }
2031              break;
2032            case 'c':
2033              // this this might be a callback function
2034              $j++;
2035              $k = strpos($text,'>',$j);
2036              if ($k!==false && $text[$j]==':'){
2037                // then this will be treated as a callback directive
2038                $directive = $k-$i+1;
2039                $f=0;
2040                // split the remainder on colons to get the function name and the paramater
2041                $tmp = substr($text,$j+1,$k-$j-1);
2042                $b1 = strpos($tmp,':');
2043                if ($b1!==false){
2044                  $func = substr($tmp,0,$b1);
2045                  $parm = substr($tmp,$b1+1);
2046                } else {
2047                  $func=$tmp;
2048                  $parm='';
2049                }
2050                if (!isset($func) || !strlen(trim($func))){
2051                  $directive=0;
2052                } else {
2053                  // only call the function if this is the final call
2054                  if ($final){
2055                    // need to assess the text position, calculate the text width to this point
2056                    // can use getTextWidth to find the text width I think
2057                    $tmp = $this->PRVTgetTextPosition($x,$y,$angle,$size,$wordSpaceAdjust,substr($text,0,$i));
2058                    $info = array('x'=>$tmp[0],'y'=>$tmp[1],'angle'=>$angle,'status'=>'end','p'=>$parm,'nCallback'=>$this->nCallback);
2059                    $x=$tmp[0];
2060                    $y=$tmp[1];
2061                    $ret = $this->$func($info);
2062                    if (is_array($ret)){
2063                      // then the return from the callback function could set the position, to start with, later will do font colour, and font
2064                      foreach($ret as $rk=>$rv){
2065                        switch($rk){
2066                          case 'x':
2067                          case 'y':
2068                            $$rk=$rv;
2069                            break;
2070                        }
2071                      }
2072                    }
2073                    // also remove from to the stack
2074                    // for simplicity, just take from the end, fix this another day
2075                    $this->nCallback--;
2076                    if ($this->nCallback<0){
2077                      $this->nCallBack=0;
2078                    }
2079                  }
2080                }
2081              }
2082              break;
2083          }
2084          break;
2085        case 'b':
2086        case 'i':
2087          $j++;
2088          if ($text[$j]=='>'){
2089            $this->currentTextState.=$text[$j-1];
2090            $directive=$j-$i+1;
2091          }
2092          break;
2093        case 'C':
2094          $noClose=1;
2095        case 'c':
2096          // this this might be a callback function
2097          $j++;
2098          $k = strpos($text,'>',$j);
2099          if ($k!==false && $text[$j]==':'){
2100            // then this will be treated as a callback directive
2101            $directive = $k-$i+1;
2102            $f=0;
2103            // split the remainder on colons to get the function name and the paramater
2104  //          $bits = explode(':',substr($text,$j+1,$k-$j-1));
2105            $tmp = substr($text,$j+1,$k-$j-1);
2106            $b1 = strpos($tmp,':');
2107            if ($b1!==false){
2108              $func = substr($tmp,0,$b1);
2109              $parm = substr($tmp,$b1+1);
2110            } else {
2111              $func=$tmp;
2112              $parm='';
2113            }
2114            if (!isset($func) || !strlen(trim($func))){
2115              $directive=0;
2116            } else {
2117              // only call the function if this is the final call, ie, the one actually doing printing, not measurement
2118              if ($final){
2119                // need to assess the text position, calculate the text width to this point
2120                // can use getTextWidth to find the text width I think
2121                // also add the text height and decender
2122                $tmp = $this->PRVTgetTextPosition($x,$y,$angle,$size,$wordSpaceAdjust,substr($text,0,$i));
2123                $info = array('x'=>$tmp[0],'y'=>$tmp[1],'angle'=>$angle,'status'=>'start','p'=>$parm,'f'=>$func,'height'=>$this->getFontHeight($size),'decender'=>$this->getFontDecender($size));
2124                $x=$tmp[0];
2125                $y=$tmp[1];
2126                if (!isset($noClose) || !$noClose){
2127                  // only add to the stack if this is a small 'c', therefore is a start-stop pair
2128                  $this->nCallback++;
2129                  $info['nCallback']=$this->nCallback;
2130                  $this->callback[$this->nCallback]=$info;
2131                }
2132                $ret = $this->$func($info);
2133                if (is_array($ret)){
2134                  // then the return from the callback function could set the position, to start with, later will do font colour, and font
2135                  foreach($ret as $rk=>$rv){
2136                    switch($rk){
2137                      case 'x':
2138                      case 'y':
2139                        $$rk=$rv;
2140                        break;
2141                    }
2142                  }
2143                }
2144              }
2145            }
2146          }
2147          break;
2148      }
2149    }
2150    return $directive;
2151  }
2152  
2153  /**
2154  * add text to the document, at a specified location, size and angle on the page
2155  */
2156  function addText($x,$y,$size,$text,$angle=0,$wordSpaceAdjust=0){
2157    if (!$this->numFonts){$this->selectFont('./fonts/Helvetica');}
2158  
2159    // if there are any open callbacks, then they should be called, to show the start of the line
2160    if ($this->nCallback>0){
2161      for ($i=$this->nCallback;$i>0;$i--){
2162        // call each function
2163        $info = array('x'=>$x,'y'=>$y,'angle'=>$angle,'status'=>'sol','p'=>$this->callback[$i]['p'],'nCallback'=>$this->callback[$i]['nCallback'],'height'=>$this->callback[$i]['height'],'decender'=>$this->callback[$i]['decender']);
2164        $func = $this->callback[$i]['f'];
2165        $this->$func($info);
2166      }
2167    }
2168    if ($angle==0){
2169      $this->objects[$this->currentContents]['c'].="\n".'BT '.sprintf('%.3f',$x).' '.sprintf('%.3f',$y).' Td';
2170    } else {
2171      $a = deg2rad((float)$angle);
2172      $tmp = "\n".'BT ';
2173      $tmp .= sprintf('%.3f',cos($a)).' '.sprintf('%.3f',(-1.0*sin($a))).' '.sprintf('%.3f',sin($a)).' '.sprintf('%.3f',cos($a)).' ';
2174      $tmp .= sprintf('%.3f',$x).' '.sprintf('%.3f',$y).' Tm';
2175      $this->objects[$this->currentContents]['c'] .= $tmp;
2176    }
2177    if ($wordSpaceAdjust!=0 || $wordSpaceAdjust != $this->wordSpaceAdjust){
2178      $this->wordSpaceAdjust=$wordSpaceAdjust;
2179      $this->objects[$this->currentContents]['c'].=' '.sprintf('%.3f',$wordSpaceAdjust).' Tw';
2180    }
2181    $len=strlen($text);
2182    $start=0;
2183    for ($i=0;$i<$len;$i++){
2184      $f=1;
2185      $directive = $this->PRVTcheckTextDirective($text,$i,$f);
2186      if ($directive){
2187        // then we should write what we need to
2188        if ($i>$start){
2189          $part = substr($text,$start,$i-$start);
2190          $this->objects[$this->currentContents]['c'].=' /F'.$this->currentFontNum.' '.sprintf('%.1f',$size).' Tf ';
2191          $this->objects[$this->currentContents]['c'].=' ('.$this->filterText($part).') Tj';
2192        }
2193        if ($f){
2194          // then there was nothing drastic done here, restore the contents
2195          $this->setCurrentFont();
2196        } else {
2197          $this->objects[$this->currentContents]['c'] .= ' ET';
2198          $f=1;
2199          $xp=$x;
2200          $yp=$y;
2201          $directive = $this->PRVTcheckTextDirective1($text,$i,$f,1,$xp,$yp,$size,$angle,$wordSpaceAdjust);
2202  
2203          // restart the text object
2204            if ($angle==0){
2205              $this->objects[$this->currentContents]['c'].="\n".'BT '.sprintf('%.3f',$xp).' '.sprintf('%.3f',$yp).' Td';
2206            } else {
2207              $a = deg2rad((float)$angle);
2208              $tmp = "\n".'BT ';
2209              $tmp .= sprintf('%.3f',cos($a)).' '.sprintf('%.3f',(-1.0*sin($a))).' '.sprintf('%.3f',sin($a)).' '.sprintf('%.3f',cos($a)).' ';
2210              $tmp .= sprintf('%.3f',$xp).' '.sprintf('%.3f',$yp).' Tm';
2211              $this->objects[$this->currentContents]['c'] .= $tmp;
2212            }
2213            if ($wordSpaceAdjust!=0 || $wordSpaceAdjust != $this->wordSpaceAdjust){
2214              $this->wordSpaceAdjust=$wordSpaceAdjust;
2215              $this->objects[$this->currentContents]['c'].=' '.sprintf('%.3f',$wordSpaceAdjust).' Tw';
2216            }
2217        }
2218        // and move the writing point to the next piece of text
2219        $i=$i+$directive-1;
2220        $start=$i+1;
2221      }
2222  
2223    }
2224    if ($start<$len){
2225      $part = substr($text,$start);
2226      $this->objects[$this->currentContents]['c'].=' /F'.$this->currentFontNum.' '.sprintf('%.1f',$size).' Tf ';
2227      $this->objects[$this->currentContents]['c'].=' ('.$this->filterText($part).') Tj';
2228    }
2229    $this->objects[$this->currentContents]['c'].=' ET';
2230  
2231    // if there are any open callbacks, then they should be called, to show the end of the line
2232    if ($this->nCallback>0){
2233      for ($i=$this->nCallback;$i>0;$i--){
2234        // call each function
2235        $tmp = $this->PRVTgetTextPosition($x,$y,$angle,$size,$wordSpaceAdjust,$text);
2236        $info = array('x'=>$tmp[0],'y'=>$tmp[1],'angle'=>$angle,'status'=>'eol','p'=>$this->callback[$i]['p'],'nCallback'=>$this->callback[$i]['nCallback'],'height'=>$this->callback[$i]['height'],'decender'=>$this->callback[$i]['decender']);
2237        $func = $this->callback[$i]['f'];
2238        $this->$func($info);
2239      }
2240    }
2241  }
2242  
2243  /**
2244  * calculate how wide a given text string will be on a page, at a given size.
2245  * this can be called externally, but is alse used by the other class functions
2246  */
2247  function getTextWidth($size,$text){
2248    // this function should not change any of the settings, though it will need to
2249    // track any directives which change during calculation, so copy them at the start
2250    // and put them back at the end.
2251    $store_currentTextState = $this->currentTextState;
2252  
2253    if (!$this->numFonts){
2254      $this->selectFont('./fonts/Helvetica');
2255    }
2256  
2257    // converts a number or a float to a string so it can get the width
2258    $text = "$text";
2259  
2260    // hmm, this is where it all starts to get tricky - use the font information to
2261    // calculate the width of each character, add them up and convert to user units
2262    $w=0;
2263    $len=strlen($text);
2264    $cf = $this->currentFont;
2265    for ($i=0;$i<$len;$i++){
2266      $f=1;
2267      $directive = $this->PRVTcheckTextDirective($text,$i,$f);
2268      if ($directive){
2269        if ($f){
2270          $this->setCurrentFont();
2271          $cf = $this->currentFont;
2272        }
2273        $i=$i+$directive-1;
2274      } else {
2275        $char=ord($text[$i]);
2276        if (isset($this->fonts[$cf]['differences'][$char])){
2277          // then this character is being replaced by another
2278          $name = $this->fonts[$cf]['differences'][$char];
2279          if (isset($this->fonts[$cf]['C'][$name]['WX'])){
2280            $w+=$this->fonts[$cf]['C'][$name]['WX'];
2281          }
2282        } else if (isset($this->fonts[$cf]['C'][$char]['WX'])){
2283          $w+=$this->fonts[$cf]['C'][$char]['WX'];
2284        }
2285      }
2286    }
2287  
2288    $this->currentTextState = $store_currentTextState;
2289    $this->setCurrentFont();
2290  
2291    return $w*$size/1000;
2292  }
2293  
2294  /**
2295  * do a part of the calculation for sorting out the justification of the text
2296  *
2297  * @access private
2298  */
2299  function PRVTadjustWrapText($text,$actual,$width,&$x,&$adjust,$justification){
2300    switch ($justification){
2301      case 'left':
2302        return;
2303        break;
2304      case 'right':
2305        $x+=$width-$actual;
2306        break;
2307      case 'center':
2308      case 'centre':
2309        $x+=($width-$actual)/2;
2310        break;
2311      case 'full':
2312        // count the number of words
2313        $words = explode(' ',$text);
2314        $nspaces=count($words)-1;
2315        if ($nspaces>0){
2316          $adjust = ($width-$actual)/$nspaces;
2317        } else {
2318          $adjust=0;
2319        }
2320        break;
2321    }
2322  }
2323  
2324  /**
2325  * add text to the page, but ensure that it fits within a certain width
2326  * if it does not fit then put in as much as possible, splitting at word boundaries
2327  * and return the remainder.
2328  * justification and angle can also be specified for the text
2329  */
2330  function addTextWrap($x,$y,$width,$size,$text,$justification='left',$angle=0,$test=0){
2331    // this will display the text, and if it goes beyond the width $width, will backtrack to the
2332    // previous space or hyphen, and return the remainder of the text.
2333    // $justification can be set to 'left','right','center','centre','full'
2334  
2335    // need to store the initial text state, as this will change during the width calculation
2336    // but will need to be re-set before printing, so that the chars work out right
2337    $store_currentTextState = $this->currentTextState;
2338    if (!$this->numFonts){$this->selectFont('./fonts/Helvetica');}
2339    if ($width<=0){
2340      // error, pretend it printed ok, otherwise risking a loop
2341      return '';
2342    }
2343    $w=0;
2344    $break=0;
2345    $breakWidth=0;
2346    $len=strlen($text);
2347    $cf = $this->currentFont;
2348    $tw = $width/$size*1000;
2349    for ($i=0;$i<$len;$i++){
2350      $f=1;
2351      $directive = $this->PRVTcheckTextDirective($text,$i,$f);
2352      if ($directive){
2353        if ($f){
2354          $this->setCurrentFont();
2355          $cf = $this->currentFont;
2356        }
2357        $i=$i+$directive-1;
2358      } else {
2359        $cOrd = ord($text[$i]);
2360        if (isset($this->fonts[$cf]['differences'][$cOrd])){
2361          // then this character is being replaced by another
2362          $cOrd2 = $this->fonts[$cf]['differences'][$cOrd];
2363        } else {
2364          $cOrd2 = $cOrd;
2365        }
2366  
2367        if (isset($this->fonts[$cf]['C'][$cOrd2]['WX'])){
2368          $w+=$this->fonts[$cf]['C'][$cOrd2]['WX'];
2369        }
2370        if ($w>$tw){
2371          // then we need to truncate this line
2372          if ($break>0){
2373            // then we have somewhere that we can split :)
2374            if ($text[$break]==' '){
2375              $tmp = substr($text,0,$break);
2376            } else {
2377              $tmp = substr($text,0,$break+1);
2378            }
2379            $adjust=0;
2380            $this->PRVTadjustWrapText($tmp,$breakWidth,$width,$x,$adjust,$justification);
2381  
2382            // reset the text state
2383            $this->currentTextState = $store_currentTextState;
2384            $this->setCurrentFont();
2385            if (!$test){
2386              $this->addText($x,$y,$size,$tmp,$angle,$adjust);
2387            }
2388            return substr($text,$break+1);
2389          } else {
2390            // just split before the current character
2391            $tmp = substr($text,0,$i);
2392            $adjust=0;
2393            $ctmp=ord($text[$i]);
2394            if (isset($this->fonts[$cf]['differences'][$ctmp])){
2395              $ctmp=$this->fonts[$cf]['differences'][$ctmp];
2396            }
2397            $tmpw=($w-$this->fonts[$cf]['C'][$ctmp]['WX'])*$size/1000;
2398            $this->PRVTadjustWrapText($tmp,$tmpw,$width,$x,$adjust,$justification);
2399            // reset the text state
2400            $this->currentTextState = $store_currentTextState;
2401            $this->setCurrentFont();
2402            if (!$test){
2403              $this->addText($x,$y,$size,$tmp,$angle,$adjust);
2404            }
2405            return substr($text,$i);
2406          }
2407        }
2408        if ($text[$i]=='-'){
2409          $break=$i;
2410          $breakWidth = $w*$size/1000;
2411        }
2412        if ($text[$i]==' '){
2413          $break=$i;
2414          $ctmp=ord($text[$i]);
2415          if (isset($this->fonts[$cf]['differences'][$ctmp])){
2416            $ctmp=$this->fonts[$cf]['differences'][$ctmp];
2417          }
2418          $breakWidth = ($w-$this->fonts[$cf]['C'][$ctmp]['WX'])*$size/1000;
2419        }
2420      }
2421    }
2422    // then there was no need to break this line
2423    if ($justification=='full'){
2424      $justification='left';
2425    }
2426    $adjust=0;
2427    $tmpw=$w*$size/1000;
2428    $this->PRVTadjustWrapText($text,$tmpw,$width,$x,$adjust,$justification);
2429    // reset the text state
2430    $this->currentTextState = $store_currentTextState;
2431    $this->setCurrentFont();
2432    if (!$test){
2433      $this->addText($x,$y,$size,$text,$angle,$adjust,$angle);
2434    }
2435    return '';
2436  }
2437  
2438  /**
2439  * this will be called at a new page to return the state to what it was on the
2440  * end of the previous page, before the stack was closed down
2441  * This is to get around not being able to have open 'q' across pages
2442  *
2443  */
2444  function saveState($pageEnd=0){
2445    if ($pageEnd){
2446      // this will be called at a new page to return the state to what it was on the
2447      // end of the previous page, before the stack was closed down
2448      // This is to get around not being able to have open 'q' across pages
2449      $opt = $this->stateStack[$pageEnd]; // ok to use this as stack starts numbering at 1
2450      $this->setColor($opt['col']['r'],$opt['col']['g'],$opt['col']['b'],1);
2451      $this->setStrokeColor($opt['str']['r'],$opt['str']['g'],$opt['str']['b'],1);
2452      $this->objects[$this->currentContents]['c'].="\n".$opt['lin'];
2453  //    $this->currentLineStyle = $opt['lin'];
2454    } else {
2455      $this->nStateStack++;
2456      $this->stateStack[$this->nStateStack]=array(
2457        'col'=>$this->currentColour
2458       ,'str'=>$this->currentStrokeColour
2459       ,'lin'=>$this->currentLineStyle
2460      );
2461    }
2462    $this->objects[$this->currentContents]['c'].="\nq";
2463  }
2464  
2465  /**
2466  * restore a previously saved state
2467  */
2468  function restoreState($pageEnd=0){
2469    if (!$pageEnd){
2470      $n = $this->nStateStack;
2471      $this->currentColour = $this->stateStack[$n]['col'];
2472      $this->currentStrokeColour = $this->stateStack[$n]['str'];
2473      $this->objects[$this->currentContents]['c'].="\n".$this->stateStack[$n]['lin'];
2474      $this->currentLineStyle = $this->stateStack[$n]['lin'];
2475      unset($this->stateStack[$n]);
2476      $this->nStateStack--;
2477    }
2478    $this->objects[$this->currentContents]['c'].="\nQ";
2479  }
2480  
2481  /**
2482  * make a loose object, the output will go into this object, until it is closed, then will revert to
2483  * the current one.
2484  * this object will not appear until it is included within a page.
2485  * the function will return the object number
2486  */
2487  function openObject(){
2488    $this->nStack++;
2489    $this->stack[$this->nStack]=array('c'=>$this->currentContents,'p'=>$this->currentPage);
2490    // add a new object of the content type, to hold the data flow
2491    $this->numObj++;
2492    $this->o_contents($this->numObj,'new');
2493    $this->currentContents=$this->numObj;
2494    $this->looseObjects[$this->numObj]=1;
2495  
2496    return $this->numObj;
2497  }
2498  
2499  /**
2500  * open an existing object for editing
2501  */
2502  function reopenObject($id){
2503     $this->nStack++;
2504     $this->stack[$this->nStack]=array('c'=>$this->currentContents,'p'=>$this->currentPage);
2505     $this->currentContents=$id;
2506     // also if this object is the primary contents for a page, then set the current page to its parent
2507     if (isset($this->objects[$id]['onPage'])){
2508       $this->currentPage = $this->objects[$id]['onPage'];
2509     }
2510  }
2511  
2512  /**
2513  * close an object
2514  */
2515  function closeObject(){
2516    // close the object, as long as there was one open in the first place, which will be indicated by
2517    // an objectId on the stack.
2518    if ($this->nStack>0){
2519      $this->currentContents=$this->stack[$this->nStack]['c'];
2520      $this->currentPage=$this->stack[$this->nStack]['p'];
2521      $this->nStack--;
2522      // easier to probably not worry about removing the old entries, they will be overwritten
2523      // if there are new ones.
2524    }
2525  }
2526  
2527  /**
2528  * stop an object from appearing on pages from this point on
2529  */
2530  function stopObject($id){
2531    // if an object has been appearing on pages up to now, then stop it, this page will
2532    // be the last one that could contian it.
2533    if (isset($this->addLooseObjects[$id])){
2534      $this->addLooseObjects[$id]='';
2535    }
2536  }
2537  
2538  /**
2539  * after an object has been created, it wil only show if it has been added, using this function.
2540  */
2541  function addObject($id,$options='add'){
2542    // add the specified object to the page
2543    if (isset($this->looseObjects[$id]) && $this->currentContents!=$id){
2544      // then it is a valid object, and it is not being added to itself
2545      switch($options){
2546        case 'all':
2547          // then this object is to be added to this page (done in the next block) and
2548          // all future new pages.
2549          $this->addLooseObjects[$id]='all';
2550        case 'add':
2551          if (isset($this->objects[$this->currentContents]['onPage'])){
2552            // then the destination contents is the primary for the page
2553            // (though this object is actually added to that page)
2554            $this->o_page($this->objects[$this->currentContents]['onPage'],'content',$id);
2555          }
2556          break;
2557        case 'even':
2558          $this->addLooseObjects[$id]='even';
2559          $pageObjectId=$this->objects[$this->currentContents]['onPage'];
2560          if ($this->objects[$pageObjectId]['info']['pageNum']%2==0){
2561            $this->addObject($id); // hacky huh :)
2562          }
2563          break;
2564        case 'odd':
2565          $this->addLooseObjects[$id]='odd';
2566          $pageObjectId=$this->objects[$this->currentContents]['onPage'];
2567          if ($this->objects[$pageObjectId]['info']['pageNum']%2==1){
2568            $this->addObject($id); // hacky huh :)
2569          }
2570          break;
2571        case 'next':
2572          $this->addLooseObjects[$id]='all';
2573          break;
2574        case 'nexteven':
2575          $this->addLooseObjects[$id]='even';
2576          break;
2577        case 'nextodd':
2578          $this->addLooseObjects[$id]='odd';
2579          break;
2580      }
2581    }
2582  }
2583  
2584  /**
2585  * add content to the documents info object
2586  */
2587  function addInfo($label,$value=0){
2588    // this will only work if the label is one of the valid ones.
2589    // modify this so that arrays can be passed as well.
2590    // if $label is an array then assume that it is key=>value pairs
2591    // else assume that they are both scalar, anything else will probably error
2592    if (is_array($label)){
2593      foreach ($label as $l=>$v){
2594        $this->o_info($this->infoObject,$l,$v);
2595      }
2596    } else {
2597      $this->o_info($this->infoObject,$label,$value);
2598    }
2599  }
2600  
2601  /**
2602  * set the viewer preferences of the document, it is up to the browser to obey these.
2603  */
2604  function setPreferences($label,$value=0){
2605    // this will only work if the label is one of the valid ones.
2606    if (is_array($label)){
2607      foreach ($label as $l=>$v){
2608        $this->o_catalog($this->catalogId,'viewerPreferences',array($l=>$v));
2609      }
2610    } else {
2611      $this->o_catalog($this->catalogId,'viewerPreferences',array($label=>$value));
2612    }
2613  }
2614  
2615  /**
2616  * extract an integer from a position in a byte stream
2617  *
2618  * @access private
2619  */
2620  function PRVT_getBytes(&$data,$pos,$num){
2621    // return the integer represented by $num bytes from $pos within $data
2622    $ret=0;
2623    for ($i=0;$i<$num;$i++){
2624      $ret=$ret*256;
2625      $ret+=ord($data[$pos+$i]);
2626    }
2627    return $ret;
2628  }
2629  
2630  /**
2631  * add a PNG image into the document, from a file
2632  * this should work with remote files
2633  */
2634  function addPngFromFile($file,$x,$y,$w=0,$h=0){
2635    // read in a png file, interpret it, then add to the system
2636    $error=0;
2637    $tmp = get_magic_quotes_runtime();
2638    set_magic_quotes_runtime(0);
2639    $fp = @fopen($file,'rb');
2640    if ($fp){
2641      $data='';
2642      while(!feof($fp)){
2643        $data .= fread($fp,1024);
2644      }
2645      fclose($fp);
2646    } else {
2647      $error = 1;
2648      $errormsg = 'trouble opening file: '.$file;
2649    }
2650    set_magic_quotes_runtime($tmp);
2651  
2652    if (!$error){
2653      $header = chr(137).chr(80).chr(78).chr(71).chr(13).chr(10).chr(26).chr(10);
2654      if (substr($data,0,8)!=$header){
2655        $error=1;
2656        $errormsg = 'this file does not have a valid header';
2657      }
2658    }
2659  
2660    if (!$error){
2661      // set pointer
2662      $p = 8;
2663      $len = strlen($data);
2664      // cycle through the file, identifying chunks
2665      $haveHeader=0;
2666      $info=array();
2667      $idata='';
2668      $pdata='';
2669      while ($p<$len){
2670        $chunkLen = $this->PRVT_getBytes($data,$p,4);
2671        $chunkType = substr($data,$p+4,4);
2672  //      echo $chunkType.' - '.$chunkLen.'<br>';
2673  
2674        switch($chunkType){
2675          case 'IHDR':
2676            // this is where all the file information comes from
2677            $info['width']=$this->PRVT_getBytes($data,$p+8,4);
2678            $info['height']=$this->PRVT_getBytes($data,$p+12,4);
2679            $info['bitDepth']=ord($data[$p+16]);
2680            $info['colorType']=ord($data[$p+17]);
2681            $info['compressionMethod']=ord($data[$p+18]);
2682            $info['filterMethod']=ord($data[$p+19]);
2683            $info['interlaceMethod']=ord($data[$p+20]);
2684  //print_r($info);
2685            $haveHeader=1;
2686            if ($info['compressionMethod']!=0){
2687              $error=1;
2688              $errormsg = 'unsupported compression method';
2689            }
2690            if ($info['filterMethod']!=0){
2691              $error=1;
2692              $errormsg = 'unsupported filter method';
2693            }
2694            break;
2695          case 'PLTE':
2696            $pdata.=substr($data,$p+8,$chunkLen);
2697            break;
2698          case 'IDAT':
2699            $idata.=substr($data,$p+8,$chunkLen);
2700            break;
2701          case 'tRNS':
2702            //this chunk can only occur once and it must occur after the PLTE chunk and before IDAT chunk
2703            //print "tRNS found, color type = ".$info['colorType']."<BR>";
2704            $transparency = array();
2705            if ($info['colorType'] == 3) { // indexed color, rbg
2706            /* corresponding to entries in the plte chunk
2707            Alpha for palette index 0: 1 byte
2708            Alpha for palette index 1: 1 byte
2709            ...etc...
2710            */
2711              // there will be one entry for each palette entry. up until the last non-opaque entry.
2712              // set up an array, stretching over all palette entries which will be o (opaque) or 1 (transparent)
2713              $transparency['type']='indexed';
2714              $numPalette = strlen($pdata)/3;
2715              $trans=0;
2716              for ($i=$chunkLen;$i>=0;$i--){
2717                if (ord($data[$p+8+$i])==0){
2718                  $trans=$i;
2719                }
2720              }
2721              $transparency['data'] = $trans;
2722  
2723            } elseif($info['colorType'] == 0) { // grayscale
2724            /* corresponding to entries in the plte chunk
2725            Gray: 2 bytes, range 0 .. (2^bitdepth)-1
2726            */
2727  //            $transparency['grayscale']=$this->PRVT_getBytes($data,$p+8,2); // g = grayscale
2728              $transparency['type']='indexed';
2729              $transparency['data'] = ord($data[$p+8+1]);
2730  
2731            } elseif($info['colorType'] == 2) { // truecolor
2732            /* corresponding to entries in the plte chunk
2733            Red: 2 bytes, range 0 .. (2^bitdepth)-1
2734            Green: 2 bytes, range 0 .. (2^bitdepth)-1
2735            Blue: 2 bytes, range 0 .. (2^bitdepth)-1
2736            */
2737              $transparency['r']=$this->PRVT_getBytes($data,$p+8,2); // r from truecolor
2738              $transparency['g']=$this->PRVT_getBytes($data,$p+10,2); // g from truecolor
2739              $transparency['b']=$this->PRVT_getBytes($data,$p+12,2); // b from truecolor
2740  
2741            } else {
2742            //unsupported transparency type
2743            }
2744            // KS End new code
2745            break;
2746          default:
2747            break;
2748        }
2749  
2750        $p += $chunkLen+12;
2751      }
2752  
2753      if(!$haveHeader){
2754        $error = 1;
2755        $errormsg = 'information header is missing';
2756      }
2757      if (isset($info['interlaceMethod']) && $info['interlaceMethod']){
2758        $error = 1;
2759        $errormsg = 'There appears to be no support for interlaced images in pdf.';
2760      }
2761    }
2762  
2763    if (!$error && $info['bitDepth'] > 8){
2764      $error = 1;
2765      $errormsg = 'only bit depth of 8 or less is supported';
2766    }
2767  
2768    if (!$error){
2769      if ($info['colorType']!=2 && $info['colorType']!=0 && $info['colorType']!=3){
2770        $error = 1;
2771        $errormsg = 'transparancey alpha channel not supported, transparency only supported for palette images.';
2772      } else {
2773        switch ($info['colorType']){
2774          case 3:
2775            $color = 'DeviceRGB';
2776            $ncolor=1;
2777            break;
2778          case 2:
2779            $color = 'DeviceRGB';
2780            $ncolor=3;
2781            break;
2782          case 0:
2783            $color = 'DeviceGray';
2784            $ncolor=1;
2785            break;
2786        }
2787      }
2788    }
2789    if ($error){
2790      $this->addMessage('PNG error - ('.$file.') '.$errormsg);
2791      return;
2792    }
2793    if ($w==0){
2794      $w=$h/$info['height']*$info['width'];
2795    }
2796    if ($h==0){
2797      $h=$w*$info['height']/$info['width'];
2798    }
2799  //print_r($info);
2800    // so this image is ok... add it in.
2801    $this->numImages++;
2802    $im=$this->numImages;
2803    $label='I'.$im;
2804    $this->numObj++;
2805  //  $this->o_image($this->numObj,'new',array('label'=>$label,'data'=>$idata,'iw'=>$w,'ih'=>$h,'type'=>'png','ic'=>$info['width']));
2806    $options = array('label'=>$label,'data'=>$idata,'bitsPerComponent'=>$info['bitDepth'],'pdata'=>$pdata
2807                                        ,'iw'=>$info['width'],'ih'=>$info['height'],'type'=>'png','color'=>$color,'ncolor'=>$ncolor);
2808    if (isset($transparency)){
2809      $options['transparency']=$transparency;
2810    }
2811    $this->o_image($this->numObj,'new',$options);
2812  
2813    $this->objects[$this->currentContents]['c'].="\nq";
2814    $this->objects[$this->currentContents]['c'].="\n".sprintf('%.3f',$w)." 0 0 ".sprintf('%.3f',$h)." ".sprintf('%.3f',$x)." ".sprintf('%.3f',$y)." cm";
2815    $this->objects[$this->currentContents]['c'].="\n/".$label.' Do';
2816    $this->objects[$this->currentContents]['c'].="\nQ";
2817  }
2818  
2819  /**
2820  * add a JPEG image into the document, from a file
2821  */
2822  function addJpegFromFile($img,$x,$y,$w=0,$h=0){
2823    // attempt to add a jpeg image straight from a file, using no GD commands
2824    // note that this function is unable to operate on a remote file.
2825  
2826    if (!file_exists($img)){
2827      return;
2828    }
2829  
2830    $tmp=getimagesize($img);
2831    $imageWidth=$tmp[0];
2832    $imageHeight=$tmp[1];
2833  
2834    if (isset($tmp['channels'])){
2835      $channels = $tmp['channels'];
2836    } else {
2837      $channels = 3;
2838    }
2839  
2840    if ($w<=0 && $h<=0){
2841      $w=$imageWidth;
2842    }
2843    if ($w==0){
2844      $w=$h/$imageHeight*$imageWidth;
2845    }
2846    if ($h==0){
2847      $h=$w*$imageHeight/$imageWidth;
2848    }
2849  
2850    $fp=fopen($img,'rb');
2851  
2852    $tmp = get_magic_quotes_runtime();
2853    set_magic_quotes_runtime(0);
2854    $data = fread($fp,filesize($img));
2855    set_magic_quotes_runtime($tmp);
2856  
2857    fclose($fp);
2858  
2859    $this->addJpegImage_common($data,$x,$y,$w,$h,$imageWidth,$imageHeight,$channels);
2860  }
2861  
2862  /**
2863  * add an image into the document, from a GD object
2864  * this function is not all that reliable, and I would probably encourage people to use
2865  * the file based functions
2866  */
2867  function addImage(&$img,$x,$y,$w=0,$h=0,$quality=75){
2868    // add a new image into the current location, as an external object
2869    // add the image at $x,$y, and with width and height as defined by $w & $h
2870  
2871    // note that this will only work with full colour images and makes them jpg images for display
2872    // later versions could present lossless image formats if there is interest.
2873  
2874    // there seems to be some problem here in that images that have quality set above 75 do not appear
2875    // not too sure why this is, but in the meantime I have restricted this to 75.
2876    if ($quality>75){
2877      $quality=75;
2878    }
2879  
2880    // if the width or height are set to zero, then set the other one based on keeping the image
2881    // height/width ratio the same, if they are both zero, then give up :)
2882    $imageWidth=imagesx($img);
2883    $imageHeight=imagesy($img);
2884  
2885    if ($w<=0 && $h<=0){
2886      return;
2887    }
2888    if ($w==0){
2889      $w=$h/$imageHeight*$imageWidth;
2890    }
2891    if ($h==0){
2892      $h=$w*$imageHeight/$imageWidth;
2893    }
2894  
2895    // gotta get the data out of the img..
2896  
2897    // so I write to a temp file, and then read it back.. soo ugly, my apologies.
2898    $tmpDir='/tmp';
2899    $tmpName=tempnam($tmpDir,'img');
2900    imagejpeg($img,$tmpName,$quality);
2901    $fp=fopen($tmpName,'rb');
2902  
2903    $tmp = get_magic_quotes_runtime();
2904    set_magic_quotes_runtime(0);
2905    $fp = @fopen($tmpName,'rb');
2906    if ($fp){
2907      $data='';
2908      while(!feof($fp)){
2909        $data .= fread($fp,1024);
2910      }
2911      fclose($fp);
2912    } else {
2913      $error = 1;
2914      $errormsg = 'trouble opening file';
2915    }
2916  //  $data = fread($fp,filesize($tmpName));
2917    set_magic_quotes_runtime($tmp);
2918  //  fclose($fp);
2919    unlink($tmpName);
2920    $this->addJpegImage_common($data,$x,$y,$w,$h,$imageWidth,$imageHeight);
2921  }
2922  
2923  /**
2924  * common code used by the two JPEG adding functions
2925  *
2926  * @access private
2927  */
2928  function addJpegImage_common(&$data,$x,$y,$w=0,$h=0,$imageWidth,$imageHeight,$channels=3){
2929    // note that this function is not to be called externally
2930    // it is just the common code between the GD and the file options
2931    $this->numImages++;
2932    $im=$this->numImages;
2933    $label='I'.$im;
2934    $this->numObj++;
2935    $this->o_image($this->numObj,'new',array('label'=>$label,'data'=>$data,'iw'=>$imageWidth,'ih'=>$imageHeight,'channels'=>$channels));
2936  
2937    $this->objects[$this->currentContents]['c'].="\nq";
2938    $this->objects[$this->currentContents]['c'].="\n".sprintf('%.3f',$w)." 0 0 ".sprintf('%.3f',$h)." ".sprintf('%.3f',$x)." ".sprintf('%.3f',$y)." cm";
2939    $this->objects[$this->currentContents]['c'].="\n/".$label.' Do';
2940    $this->objects[$this->currentContents]['c'].="\nQ";
2941  }
2942  
2943  /**
2944  * specify where the document should open when it first starts
2945  */
2946  function openHere($style,$a=0,$b=0,$c=0){
2947    // this function will open the document at a specified page, in a specified style
2948    // the values for style, and the required paramters are:
2949    // 'XYZ'  left, top, zoom
2950    // 'Fit'
2951    // 'FitH' top
2952    // 'FitV' left
2953    // 'FitR' left,bottom,right
2954    // 'FitB'
2955    // 'FitBH' top
2956    // 'FitBV' left
2957    $this->numObj++;
2958    $this->o_destination($this->numObj,'new',array('page'=>$this->currentPage,'type'=>$style,'p1'=>$a,'p2'=>$b,'p3'=>$c));
2959    $id = $this->catalogId;
2960    $this->o_catalog($id,'openHere',$this->numObj);
2961  }
2962  
2963  /**
2964  * create a labelled destination within the document
2965  */
2966  function addDestination($label,$style,$a=0,$b=0,$c=0){
2967    // associates the given label with the destination, it is done this way so that a destination can be specified after
2968    // it has been linked to
2969    // styles are the same as the 'openHere' function
2970    $this->numObj++;
2971    $this->o_destination($this->numObj,'new',array('page'=>$this->currentPage,'type'=>$style,'p1'=>$a,'p2'=>$b,'p3'=>$c));
2972    $id = $this->numObj;
2973    // store the label->idf relationship, note that this means that labels can be used only once
2974    $this->destinations["$label"]=$id;
2975  }
2976  
2977  /**
2978  * define font families, this is used to initialize the font families for the default fonts
2979  * and for the user to add new ones for their fonts. The default bahavious can be overridden should
2980  * that be desired.
2981  */
2982  function setFontFamily($family,$options=''){
2983    if (!is_array($options)){
2984      if ($family=='init'){
2985        // set the known family groups
2986        // these font families will be used to enable bold and italic markers to be included
2987        // within text streams. html forms will be used... <b></b> <i></i>
2988        $this->fontFamilies['Helvetica.afm']=array(
2989           'b'=>'Helvetica-Bold.afm'
2990          ,'i'=>'Helvetica-Oblique.afm'
2991          ,'bi'=>'Helvetica-BoldOblique.afm'
2992          ,'ib'=>'Helvetica-BoldOblique.afm'
2993        );
2994        $this->fontFamilies['Courier.afm']=array(
2995           'b'=>'Courier-Bold.afm'
2996          ,'i'=>'Courier-Oblique.afm'
2997          ,'bi'=>'Courier-BoldOblique.afm'
2998          ,'ib'=>'Courier-BoldOblique.afm'
2999        );
3000        $this->fontFamilies['Times-Roman.afm']=array(
3001           'b'=>'Times-Bold.afm'
3002          ,'i'=>'Times-Italic.afm'
3003          ,'bi'=>'Times-BoldItalic.afm'
3004          ,'ib'=>'Times-BoldItalic.afm'
3005        );
3006      }
3007    } else {
3008      // the user is trying to set a font family
3009      // note that this can also be used to set the base ones to something else
3010      if (strlen($family)){
3011        $this->fontFamilies[$family] = $options;
3012      }
3013    }
3014  }
3015  
3016  /**
3017  * used to add messages for use in debugging
3018  */
3019  function addMessage($message){
3020    $this->messages.=$message."\n";
3021  }
3022  
3023  /**
3024  * a few functions which should allow the document to be treated transactionally.
3025  */
3026  function transaction($action){
3027    switch ($action){
3028      case 'start':
3029        // store all the data away into the checkpoint variable
3030        $data = get_object_vars($this);
3031        $this->checkpoint = $data;
3032        unset($data);
3033        break;
3034      case 'commit':
3035        if (is_array($this->checkpoint) && isset($this->checkpoint['checkpoint'])){
3036          $tmp = $this->checkpoint['checkpoint'];
3037          $this->checkpoint = $tmp;
3038          unset($tmp);
3039        } else {
3040          $this->checkpoint='';
3041        }
3042        break;
3043      case 'rewind':
3044        // do not destroy the current checkpoint, but move us back to the state then, so that we can try again
3045        if (is_array($this->checkpoint)){
3046          // can only abort if were inside a checkpoint
3047          $tmp = $this->checkpoint;
3048          foreach ($tmp as $k=>$v){
3049            if ($k != 'checkpoint'){
3050              $this->$k=$v;
3051            }
3052          }
3053          unset($tmp);
3054        }
3055        break;
3056      case 'abort':
3057        if (is_array($this->checkpoint)){
3058          // can only abort if were inside a checkpoint
3059          $tmp = $this->checkpoint;
3060          foreach ($tmp as $k=>$v){
3061            $this->$k=$v;
3062          }
3063          unset($tmp);
3064        }
3065        break;
3066    }
3067  
3068  }
3069  
3070  } // end of class
3071  
3072  ?>

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